The Mk. 0.5 boasted much tamer acceleration and enough power to travel at dangerous speeds. But the best part about either Magic Engine was the fact that they were self-sustained by the ambient magic that pervaded the world. In theory, they could run out of energy, but that would require maximum power loads to be sustained for hours on end, and even then it would only take another couple hours to fully recharge with the same ambient energy that powered them.