§ 8107-30.1.1. Where such facilities do not remain at the same location for more than 30 minutes at a time, and sell food to employees (during the workday), students (during class hours) and residents on the same lot as that on which the facility is parked or situated, or on lots adjacent thereto, or if such facilities are parked on public property, they are allowed in all zones and are exempt from Zoning Clearance requirements.