LOL, that's hilarious. I guess cause the thing has 4 wheels gives it a pass through the drive through. I've actually been given service walking through a drive through. But this is because it was 2:00 a.m in the morning and the dining area is closed. I guess it's up to how safe the employees feel.
Your anecdote reminds me of an incident several years ago in Athens, OH.
It was late (after a gig) and I was STARVED, but the only restaurant open nearby was a Papa John's. Walk-in service was closed, but they were still doing deliveries. The catch, however, was that they refused to deliver to the (seedy) hotel where I was staying.
I begged and pleaded. They refused.
I called them on my cell phone from the parking lot and asked if they could deliver a pizza to me in my car. They refused.
I could see the employees inside the restaurant. They were making pizzas. Drivers were leaving on runs!
I called back and offered that I could leave a 20 on the ground outside their door, move back a safe distance, and let them set the pizza down on the ground and take the $20, no questions asked, no change required. They refused.
I briefly considered bribing a departing driver for his pies, but by then I was so furious, hungry and exhausted, I felt I might actually go ahead and commit an actual crime.
Sadly, to this day, I don't boycott Papa John's.