You're going to laugh, but the racecar that I'm rhapsodizing about was powered by a 9-horsepower, four-stroke, box-stock Honda industrial engine, had a single hydraulic disc brake on the rear axle, and topped out at all of 40 mph. But it's like going 60 in a small speedboat. Unless you've been there, you can't understand how different the sensation of speed is when your buns are 2 inches off the asphalt and the track is tight enough that only near the end of the main straight does the kart top out. Karts respond almost exactly as a pure racecar does to threshold and trail braking, to clumsy steering inputs and asking the tires to do too much, to left-foot braking, and to throttle steer. One of the things they'll teach most effectively is that a vehicle that is balanced, pointed, and under firm power at high speed is an awful lot more controllable and predictable than is one that's being driven cautiously, tentatively, and fearfully. And it's a hell of a lot faster.