Rev it up is a Mazda organized event where in you run an autocross style course in a Mazda provided car (this year it's the new 3). The winner nationwide gets money and a car I believe.
it's 40 dollars entrance fee, but this comes with free test drives of new cars courtesy the test drive center, clinics run by pro drivers to help with cornering, braking and slalom (scourge of the auto x) (these are somewhat brief as far as teaching goes, but you can repeat it as much as you want.
all in all, a very fun experience, I did it last year and drove the new 6.
this year however, the RX-8 is gonna be in the test drive center and I aim to have the tell me to slow down again:devil (the 6 has a bit of understeer if you go into a corner hard:D)
http://www.mazdarevitup.com/home/f_default.asp
that has the times and locations and more info then I provided, enjoy!