Time to bring out my "I've already thought of it!" zoning code.
Okay ... scattered around the code.
310.8 Drive through facility
310.8.2 Definition
Drive through facility -- element of a business where goods or services are passed through exterior windows or mechanical devices to patrons in queued motor vehicles.
310.8.3 Permitted locations
Drive through facilities are permitted by right as an accessory use to restaurants and banks only (not to drug stores, dry cleaners, liquor stores or other types of businesses) in the C-G district.
404.7.2 Vehicle related uses
The following uses are prohibited ≤150’ (46 m) from a residential district.
Mechanical commercial uses, as defined in §201.
Drive through aisles.
Wing walls, landscape screens, changes in building orientation, and/or other architectural elements must be used to buffer such uses when they are 150’ (46 m) to 300’ (92 m) from a residential district.
406.6.1 Drive through aisles
Stacking lanes for drive through aisles must be ≥100’ (31 m) long measured along the centerline to the first window, ATM screen, pneumatic tube door or car wash code entry panel, with ≥40’ (13 m) from the origin to the order board, if applicable. Drive through aisle turning radii must be ≥50’ (16 m).
Drive through lanes must be physically separated from parking and circulation areas, and must not interfere with the on-site parking and circulation for other vehicles on the site, nor result in traffic queuing into a drive aisle or street.