Sure he does. And he probably has a reason. But it is absurd to assume he hasn't considered that "trains" allow more people in shorter ties than a single car. So you can speculate why he does as he does, but you are talking about someone sending people to space.
Well, he does keep showing renderings of public transit stations full of Teslas and not, you know, people. It's not really a big leap to say that he doesn't understand when he keeps marketing as if he doesn't understand.