Not sure why, but looking at this car I keep thinking about the VW "Honest 25 MPG" commercial...
Anybody know what kind of speeds they tried for in the challenges?
How much does one of those twisty heat exchangers like that hold anyway? With as low of a charge density as they'd have dumping all that heat back into the carb,
Good point on Hyper-inflating the aircraft tires, they are built so you can bounce the plane in hard enough to tweak the fuselage without popping... Normally they are run high pressure, but will hold obscenely high pressure if you aren't going to subject them to shock loads like landing. (nitrogen only, it's dry and stable) They have a round profile for even less contact patch, no lateral lugs or sipes only the tread bars to help you track straight.
For a basic idea, something like a Goodyear 'Flight Eagle' should work for a normal car-size thing and be WAY overkill, it's a large GA or Business jet tire. It'll give you an idea on how this stuff is built.
SIZE 26X6.6 inch , PLY 14 , SPEED RATING 210 MPH
Goodyear Aviation Tires - Flight Eagle® Details