Anonymous interrupted her. "If anything goes wrong, you stop the vehicle, that's all. A halt is better than a disaster. You know where the brakes and the main power valve are, Corporal. Keep your hooves on the tiller and ask Ebonshield to shut off the power if the pedals don't respond; we'll show her how at the next practice session. She's in charge of coordinating the demonstration, but you're responsible for the carriage itself."