Let me tell you what this would do for me.
Nothing.
See, I live 15 miles from work. That's about average here in Tucson. In Phoenix, I lived 10 miles from work. That was when I had to live in the worst part of Phoenix. Most people live 30-45 miles from work.
In the Bay Area, I lived 40 miles from work.
This is wonderful for those few who live 1 mile or so from work, somewhere there isn't a decent road, and who do not have kids, a house, a need for groceries or heavy items, and, most importantly, someone who doesn't live where it gets snow, wind, rain, heat, cold, hail, or sleet. For them, I'm sure it's perfect. But for most of America, it's nuts to even fantasize that this will replace the car.
Nope, you lived in the burbs.
People didn't live 40 miles from where they worked until we laid down the infrastructure that made the car a necessity.
I don't think any sane person expects this technology to replace the car--ever. I don't think it will even have a significant impact on urban planning for a good many years. However, don't rule out the possibility that this could change the way people live over a long period of time.
When cars first got started, they were mildly amusing (or annoying, depending on your point of view) toys for rich kids. Not until some of the late depression era projects (led by the likes of Robert Moses here in New York--curse his name) and the later superhighway projects of the 50's did they become the sine qua non of American urban life.