Id. See Doster v. State, 259 Ga.App. 605, 607, n. 2, 578 S.E.2d 262 (2003) (demurrer to DUI charge granted based upon Love, supra, where defendant tested positive for the presence of amphetamine, a Schedule II drug (OCGA § 16-13-26(3)(A))). Compare Keenum v. State, 248 Ga.App. 474, 475(2), 546 S.E.2d 288 (2001) (OCGA § 40-6-391(a)(6) is not unconstitutional when applied to those convicted of driving with a detectable level of cocaine in their systems because " there would never be an instance of a ‘ legal cocaine user’ " ).