It shall be unlawful for any person to park upon any highway or public place within the city any vehicle displayed for sale. Except when necessary due to a breakdown or other emergency, no person shall adjust or repair, or race the motor of, any motor vehicle or motorcycle while standing on the highways of the city. No person or employee connected with a garage or repair shop shall use sidewalks or highways in the vicinity of the garage or shop for the purpose of working on vehicles of any description.
Penalty, see § 72.99