does it have to be continuous power, or can you give it one big burst and let it coast? You'll lose power if you run it through the flywheel first due to frictional losses. You'll also lose acceleration due to the extra weight of the flywheel. Are there limitations on the design parameters? I'd build a nice, low, wide-stance car with rubber-surfaced rear wheels driven direct drive by the mouse trap. Build it long enough to overcome the rotational torque (might need a little weight on the nose) and let it fly. But that's just me
