"A drive through is different and they get very low rates of drivers ordering only to drive away." I hadn't realized this until I read your post, but most (not

"A drive through is different and they get very low rates of drivers ordering only to drive away." I hadn't realized this until I read your post, but most (not all, but most) drive-throughs that I've been to recently seem to be engineered to prevent people from ordering and then driving away. "Engineered" like civil engineering, not social engineering. They feature a single lane with curbs on either side, typically near the edge of the property (so frequently near a fence or wall, etc). I suppose the person could order, pull through, and then drive past the payment window and keep going, but other than that it's definitely not easy to leave that single, bounded lane once you're in it.