On a pretend driving adventure, he informs me:
We're going to go Australia and then Calgary and then California and then Mexico. Our car can fly when we need to go over the ocean. It's sleeping time now. I'm going to sleep. But you can't sleep because I need a driver. Our car is sun powered. And then at night it can use moon power too. Because this is a special kind of car that runs on the light of the sun and the moon and the stars and the supernovas. It uses everything that's light and that we can't reach from way down here on earth.