Holy FUHREEKIN' cow, Batman. I'm still laughing about the "Hindenburg" brand tires!
Except for races cars, where, as one poster said, everything runs right at the edge of physics for the existing materials, nitrogen in car tires is right up there with . . .
Board stretchers (an old construction favorite)
The Government Eye-Dee-Ten-Tee Form (ID10T)
Wiper Filter Cartridge
Articulate Bush (of ANY generation)
Wonder whether I can teach my compressor to compress just the nitrogen in the atmosphere . . . .