Important:
http://www.scca.com/_FileLibrary/Fil...e-accident.pdf
SCCA insurance provides coverage to some extent, much less if you are Not an scca member. A1337sti - not to scare you, just want to make sure you go in with eyes wide open.
That said - in my experience autox has been a safer driving experience than the open road (2 totalled cars in 2 years).