No person shall start, drive, move or accelerate any motor vehicle with unnecessary speed or with an unnecessary exhibition of speed on any public or private roadway or parking lot within the city limits. Prima facie evidence of such unnecessary speed shall be unreasonable squealing or screeching sounds emitted by the tires, tire marks on the pavement caused by such acceleration or the throwing of sand or gravel by the tires of the vehicle. Motor vehicles for the purpose of this section shall specifically include automobiles, trucks and motorcycles.
(`89 Code, § 120.100) Penalty, see § 10.99