O'CONNELL, J.

Plaintiffs appeal as of right from the trial court's order granting summary disposition pursuant to MCR 2.116(C)(10) in favor of defendant. We reverse and remand for further proceedings.

On July 10, 1995, Robert Ardt suffered severe injuries from an accident that occurred while he was driving a pickup truck. Plaintiff Rita Ardt, Robert's mother and coguardian, was the title owner the truck, a 1985 Chevy S10, and also of a 1987 Ford Escort. The Escort was insured through Rita's policy with defendant, but the pickup truck was not insured at all. Because Robert lived with Rita at the time of the accident, his guardians filed an insurance claim on his behalf under her policy, seeking first party no-fault personal protection benefits. Defendant denied the claim, on the ground that Robert was the owner of the uninsured vehicle involved in the accident and accordingly was precluded by law from receiving the benefits.

Robert's guardians brought suit, maintaining that Robert was not the owner of the truck and was therefore entitled to the benefits. In addition, plaintiffs Rainbow Rehabilitation Center, New Start, Inc., and Broe Rehabilitation Services, Inc. were includedas plintiffs in the action and sued defendant for payment for services they rendered to Robert, the former two arguing that promissory estoppel barred defendant from denying their claims, the latter seeking payment as a third-party beneficiary of the contract between defendant and Rita Ardt. Defendant moved for summary disposition, arguing that uncontroverted evidence established as a matter of law that Robert owned the truck and thus was not entitled to the insurance benefits, and that Rainbow and New Start acted without a sufficiently clear promise of payment from defendant as to constitute a binding contract. The trial court granted defendant's motion.

We review a trial court's decision on a motion for summary disposition de novo as a question of law. Miller v. Farm Bureau Mutual Ins. Co., 218 Mich. App. 221, 233; 553 N.W.2d 371 (1996). MCR 2.116(C)(10) provides for summary disposition where "[e]xcept as to the amount of damages, there is no genuine issue as to any material fact, and the moving party is entitled to judgment or partial judgment as a matter or law." When reviewing an order of summary disposition under MCR 2.116(C)(10), we examine all relevant documentary evidence in the light most favorable to the nonmoving party to determine whether a genuine issue of material fact exists on which reasonable minds could differ. Shirilla v. Detroit, 208 Mich. App. 434, 437; 528 N.W.2d 763 (1995). Where the moving party has produced evidence in support of the motion, the opposing party bears the burden of producing evidence to establish that a genuine issue of disputed fact exists. Skinner v. Square D Co., 445 Mich. 153, 160; 516 N.W.2d 475 (1994), citing MCR 2.116(G)(4).

Plaintiffs argue that there was a genuine issue of material fact concerning whether Robert owned the truck, as "owner" is defined by the applicable statute. We agree. MCL 500.3101(1); MSA 24.13101(1) requires the owner or registrant of a motor vehicle to carry insurance for personal protection, property protection, and residual liability. MCL 500.3113(b); MSA 24.13113(b) further provides that the owner of an uninsured motor vehicle is not entitled to personal protection insurance benefits for bodily injury resulting from an accident involving that vehicle. Accordingly, Robert avoids this latter exclusion only if, at the time of the accident, he was not the owner of the truck. "Owner" is statutorily defined to include "[a] person renting a motor vehicle or having the use thereof, under a lease or otherwise, for a period that is greater than 30 days." MCL 500.3101(2)(g)(i); MSA 24.13101(2)(g)(i).

The evidence of record includes indications from two persons concerning Robert's use of the truck in question. Deposition testimony from a defense witness indicates that Robert was a regular driver of the truck for longer than thirty days. However, Rita Ardt stated that Robert drove the car only a few times and then normally only for such minor purposes as having it washed, albeit over the space of more than thirty days. The trial court agreed with defendant that because both witnesses indicated that Robert made some use of the truck over a period exceeding thirty days, and because the statutory definition of "owner" did not suggest that frequency of usage had bearing on the matter, Robert qualified as owner of the truck at the time of his accident for purposes of this action.

This case requires that we decide whether any degree of usage for more than thirty days satisfies the statutory definition of "owner," as defendant and the trial court maintain, or whether the definition requires something more. Statutory interpretation is a question of law calling for de novo review. Michigan Basic Property Ins. Ass'n v. Ware, 230 Mich. App. 44, 48; 583 N.W.2d 240 (1998). "The primary purpose of statutory interpretation is to ascertain and give effect to the intent of the Legislature." Id. at 49. "[T]he meaning of the Legislature is to be found in the terms and arrangement of the statute without straining or refinement, and the expressions used are to be taken in their natural and ordinary sense." Gross v. General Motors Corp, 448 Mich. 147, 160; 528 N.W.2d 707 (1995).

The statutory provisions of concern here operate to prevent users of motor vehicles from obtaining the benefits of personal protection insurance without carrying their own insurance through the expedient of keeping title to their vehicles in the names of family members. Because we infer from these provisions that they were enacted in furtherance of the sound public policy imperative that users of motor vehicles maintain appropriate insurance for themselves as indicated by their actual patterns of usage, we hold that "having the use of" a motor vehicle for purposes of defining "owner," MCL 500.3101(2)(g)(i); MSA 24.13101(2)(g)(i), means using the vehicle in ways that comport with concepts of ownership. The provision does not equate ownership with any and all uses for thirty days, but rather equates ownership with "having the use of" a vehicle for that period. Further, we observe that "having the use of" appears in tandem with references to renting or leasing. These indications imply that ownership follows from proprietary or possessory usage, as opposed to merely incidental usage under the direction or with the permission of another. Under this reading of the statutory definition, the spotty and exceptional pattern of Robert's usage to which Rita attested may not be sufficient to render Robert an owner of the truck. However, the regular pattern of unsupervised usage to which the defense witness attested may well support a finding that Robert was an owner for purposes of the statute. Accordingly, there remains a genuine issue of material fact for resolution at trial, rendering summary disposition on this issue inappropriate.

Plaintiffs extend their argument against Robert's ownership of the truck by emphasizing that MCL 500.3113(b); MSA 24.13113(b) states that it is "the owner" of an uninsured motor vehicle who comes under the exclusion, arguing that the use of the definite article indicates the legislative intention to exclude only the primary owner. We disagree. This Court has specifically identified multiple owners of a motor vehicle for purposes of MCL 500.3101(2)(g); MSA 24.13101(2)(g). Integral Ins. Co. v. Maersk Container Service Co., Inc., 206 Mich. App. 325, 332; 520 N.W.2d 656 (1994). Further, in reading this state's statutory language, "[e]very word importing the singular number only may extend to and embrace the plural number, and every word importing the plural number may be applied and limited to the singular number." MCL 8.3b; MSA 2.212(2). Had the Legislature intended the exclusionary effect of MCL 500.3113(b); MSA 24.13113(b) to apply to only a single primary owner for each vehicle, it would have had to indicate that intention more clearly than by use of the definite article in this instance. We hold that where an uninsured motor vehicle involved in an accident has more than one owner, all the owners come under the statutory exclusion for personal protection benefits.

Plaintiffs next argue that summary disposition was inappropriate because there was a genuine issue of material fact concerning whether promissory estoppel barred defendant from denying Rainbow and New Start payment for services rendered to Robert. We agree. The elements for promissory estoppel are

(1) a promise, (2) that the promisor should reasonably have expected to induce action of a definite and substantial character on the part of promisee, (3) which in fact produced reliance or forbearance of that nature, and (4) in circumstances such that the promise must be enforced if injustice is to be avoided. [ Mt. Carmel Mercy Hosp. v. Allstate Ins. Co., 194 Mich. App. 580, 589; 487 N.W.2d 849 (1992).]

In this case, the record includes affidavits from employees from Rainbow and New Start indicating that defendant assured them of payment, pending only the completion of certain formalities. These affidavits provide evidence in support of all four elements of promissory estoppel. The trial court ruled that defendant's qualifications concerning its intention to pay amounted to sufficient equivocation as to avoid creating a contractual obligation to Rainbow and New Start. However, reasonable minds could interpret defendant's equivocation as bearing on when, instead of whether, defendant would pay. In deciding motions for summary disposition, a court "may not make factual findings or weigh credibility." Manning v. Hazel Park, 202 Mich. App. 685, 689; 509 N.W.2d 874 (1993). Instead, all inferences must be drawn in favor of the nonmovant and the motion should be denied unless it is impossible for the evidence offered to support the claim asserted. Mt. Carmel Mercy Hosp., supra, at 590. Because plaintiffs' affidavits provide evidence in support of Rainbow's and New Start's promissory estoppel theory against defendant, a question of material fact exists for resolution at trial. Thus, summary disposition on that issue was inappropriate.

Finally, plaintiffs ask that this case be assigned on remand to a different judge, alleging a pattern of hostility from the bench in the proceedings below. This issue is moot, because the judge in question no longer sits for the Wayne Circuit Court, and further proceedings will take place before the successor judge. This Court need not address issues that have become moot. See Smith v. Kowalski, 223 Mich. App. 610, 619; 567 N.W.2d 463 (1997).

Reversed and remanded for further proceedings consistent with this opinion. We do not retain jurisdiction.