It all comes down to this, K1 Speed in Irvine, California in the heart of the OC will be wrapping up its 2010 Challenge GP race series this Sunday December 5th! The overall points chase for the top 5 drivers will come down to this final event. Come out and join in on the best indoor kart racing competition in Southern California – sign ups start at 630PM and racing will start at 7PM. $50 gets you 2 qualifying rounds and qualified into the final rounds of the night. Don’t miss it!