Type 1. Truck chassis with body (other than station wagon or bus body) designed primarily for the transportation of persons;
Type 2. Truck chassis with other features designed for a specialized requirement other than a wrecker, including but not limited to fire fighting or snowplow features;
Type 3. Truck chassis with station wagon body;
Type 4. Passenger car chassis with body designed for the commercial transportation of persons;
Type 5. Bus chassis with other features designed for a specialized requirement, including but not limited to mobile laboratory, office, post office, classroom, studio, rescue unit, or library features;
Type 6. Utility vehicle, being a motor vehicle with a removable top, designed for carrying passengers or cargo and with particular features for operation both on highway and cross-country.
OCGA § 40-4-2