More like -5 stars.

AI constantly throws double blocks, or just flat out wrecks you..... Impossible to advance.... And, highly illegal blocking moves in INDYCAR/Cart. And, this was my complaint past 3 years. NOTHING has been changed.
FIX THIS ISSUE!!!!
Developers obviously do not care about us, so dont spend any real money. PERIOD!

ricktrains about Champ Cars Speedway, v3.1.5