this will work for you, if you're a Fat American:
When you decide you need the quarter-pounder, fries and a coke, don't sit on your ass in the car and order it through a window. Park the car and walk the 100 feet to a counter inside. yeah, i know it smells bad in there, but that's the smell of the food you're planning to eat.
Better yet, as there's a fast food joint approximately every mile and a half, in the U.S., it's not unrealistic to consider walking that distance rather than driving your car at all.
just an idea.