Basically the title, I want to drive a car to empty because I want to, but I don't wanna sit for like 5 hours.
Ngl, I would say a roamer maxed to the limit in weight with a trailer and a stop and go conditions. That or my truck.....
big v8 carbureted brick like the barstow or blue buck. be sure to use the shitty 3 speed auto for extra terrible mpg
The best way to drain your tank is actually a D35 'Beast'. Swap the "Camper Shell" with "Short Wooden Planks", and tow a "Large Box Utility Trailer with 2100kg Planks." I guarantee you will not be able to get above 4.5mpg with full throttle.