(a) The provisions of this article requiring vehicle identification numbers on passenger cars and truck chassis with features designed for specialized requirements of a wrecker shall apply only to such items manufactured after January 1, 1967, and designated by the manufacturer as a 1968 or subsequent model.

(b) This article shall not apply to motorcycles, motor driven cycles, school buses, farm tractors, buses, truck tractors, road tractors, trucks, trailers, semitrailers, pole trailers, streetcars, or go-carts or to any vehicle whether self-propelled or not which is not required to be issued a license plate under the laws of this state.

(c) This article shall not apply to the following special purpose vehicles:

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.

(d) This article shall not apply to the components of any vehicle excluded by subsection (b) or (c) of this Code section.