I just finished a road trip through a few countries in central Europe and was wondering whether I would come across a drive-in restaurant? I didn't but I wouldn't mind visiting one on the next trip.
In Germany McDonalds used to have tons of Drive-Ins, but these were actually mis-labelled Drive-Thrus. I think they call them McDrives now. It seems they still think Germans can't pronounce the TH.
So I'm looking for a place where you park but stay in your car and a waitress/waiter comes around (often on roller skates) to take your order and deliver it as well. You then eat in the car.