Yeah, very clever. There is many reason why one would like to avoid having to take a care all the time:

1. I cannot drive if I went to a friend a drunk alcohol or consume weed

2. Why would I drive if somebody/something could do it for me, and i get to do whatever i want during this time

3. Gazoline, insurance, maintenance, repair, ... a car can be very costly especially if use intensively

4. Cars are polluting a lot, maybe I don't want to contribute to the issue of global warming

And yet there are almost as many cars as adults in the USA.

How do you think all those issues are solved presently?

Would be great if you could afford the $40k and insurance to house that 4000lb hunk of precious metal you spend energy moving around everywhere you go. A bus pass is a $1.75 on the other hand...

The bus pass wouldn't be $1.75 if it serviced the rural areas. The economics just don't work with low population density.

Look at NJ Transit, in rural areas if you have a train station you get 2-3 commuter trains in the morning on week days and no service on the weekend or during the day/late at night. And thats for NJ, which has high population density even in rural areas, is physically small and is part of the north east corridor.

Don't be silly, not everyone is buying $40k cars. And the bus is a great solution if it exists, but in most places on planet earth it does not.

263 million cars in an America.