I had my caterham out at Texas World Speedway, which is a high speed track, and it hits a wall at about 125mph (on the speedo) on the banked straight. Also the front end gets light and starts to move around a bit, which makes braking and turning for the next corner a little dicey. Granted, I have the superlight america, which only has about 200 hp, a regular gearbox, and none of the junior aero bits on the nosecone, but I suspect this car wouldn't behave much differently just a little faster. I'm not yet bored or crazy enough to think I need an additional 60 hp, but maybe someday. The sequential gearbox looks fun, and the car is pretty easy to slide around in.