We're going to have to isolate those cars to separate roads that don't have pedestrians on them. Of course, those roads will need entry and exit points for peo

We're going to have to isolate those cars to separate roads that don't have pedestrians on them. Of course, those roads will need entry and exit points for people, but it's a lot safer if they are mostly isolated. And maybe we can have those cars join big convoys that are traveling to the same place so they save energy by speeding up and slowing down as a group. And then eventually we will start calling those autonomous cars "trains."