Also, at some point, I'm probably going to be too old to drive safely, which will restrict my travels. Not if self driving gets to the point where that doesn't matter anymore.
You want a train.
If you don't like sharing space with other people, you want a private room on a train.
These cars and their supporting infrastructure should cost more than a private room on a train because they are less efficient and have more negative externalities than a private room on a train.
I love trains, but let's not pretend there is a perfect Venn diagram of overlap between what their use cases are.
How often are you building treehouses that you need to pay hundreds of dollars extra a month to justify the cost, versus a one-time delivery fee?