Glitch makes a strange grinding sound as some gears in its insides work furiously. "Time. Yes, that is a good question, and no easy answer. The engine will decide which way is safest and which way is quickest and which was is most scenic, and then make some calculations and plan a route. That leg of the journey has never been less than five hours, and once or twice took more than twenty. There are many dimensions to consider, of course."