The best indoor kart racing action in the Southwest can be found at K1 Speed in Phoenix Arizona this weekend with the kick off to the 2012 Challenge GP race series coming to the South Phoenix area K1 Speed location this Sunday January 15th. Driver will take to the unique concrete surfaced facility with will be RAN IN THE REVERSE CONFIGURATION for the start of the 2012 race series. Drivers will have double qualifying rounds and corresponding main event rounds to go after the top spots on the podium and the overall points championship. Come out this Sunday at 630PM for sign-ups with qualifying to begin at 7PM. Entry fee is just$50 per driver. SEE YOU SUNDAY!