"No, plenty are weeks or even months apart. But the point was we don't have cars because we don't need them. What are they like? Other than bigger versions of that."

How many people fit in them? How do they move, is it batteries like this thing? They don't have sails, so they have some other sort of fuel. They're not actually controlled remotely as that wouldn't make any sense, so how does someone steer them and make them speed up and stop? It's not that he really needs the details, but now that he's thinking about them he can't help but be a little curious.