I have to chime in on the cost factor and the amount of laps. $30 is steep to pay when you consider that your not burning fuel, they cut you short of the full 11 laps promised if someone bumps a wall and they stop the race. I think I managed 5 or 6 laps at best before they ended the race.
Now if it had been $30 and you can race for a few hours then it wouldnt be a bad deal.
Cost to fun ratio not so good as these are tough economic times and there are other tracks in town where you get more bang for the buck.
Yes the Karts are fast, and just about the time your getting in sync with the car and track conditions and braking and turning points its over.