The same problems of people being able to move fast without exertion or neighborly interaction seem as true for this PRT as for cars. What's the problem that t

The same problems of people being able to move fast without exertion or neighborly interaction seem as true for this PRT as for cars. What's the problem that they're trying to solve? People want to talk on their cellphones and read a book as they drive? Cabbies aren't everywhere? Even if it solves these problems on the cheap, it's going to be pretty unsatisfying if you just zip around in your lonely pod. This sounds like an enormous capital expense, compared to (say) self-driving 15mph cars, and it doesn't seem like it's a big benefit holistically to a city.