A lot of them are found... a few knew people who knew people... basically... get good at your craft and they will find you... but REALLY good. If you wanna race in the US then move over youre looking getting together a race team, getting a car, and getting yourself noticed. BEfore that I would say go to driving school and make connections there gradually you'll meet someone who "knows a guy who knows a guy" then you go from there.
"It is not best that we should all think alike; it is differences of opinion that make horse races."
Pioneers are the ones with the arrows in their @$$