I would say that would be a really hard thing to quantify or come to a conclusion about...
Anyways, if I had to pick someone, Americans because we will race anything, and I mean anything...everything from sportscars in SCCA to dirt bikes to Sprint Cars, to lawn mowers to anything that moves basically lol.
I'm not really sure what you are asking...race crazy for F1? Or race crazy for just clean auto racing like LeMans or something, or any kind of racing like boat racing and offroad racing, etc. If you mean all racing I'd say America (probably because I am an American, but as I said above we will race anything), we just have so many different kinds of racing series here in America. 8)
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1992 Toyota Celica GT 5spd, intake.
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