"Dan, this is crazy!" Amy quavered. "You can't drive a boat!" "Say's who? It's no different from Xbox!" The port-side rubber bumper at the launch's bow slammed into the end of an ancient cobblestone wharf. The small craft spun like a top, pitching Amy to the deck. Only an iron grip on the wheel saved Dan from a similar spill. He hung on for dear life. "Okay, scratch Xbox-think bumper cars! I rock at those! Remember the carnival?" --