I find this interesting. I like having neighborhoods where I can walk and ride my bicycle.
In a hypothetical future world, you might have trains that could take you anywhere you want to go within a few blocks. It might be too costly. However, roads tend to get more crowded over time.
There is a famous old science fiction story called, "The Roads Must Roll", where a future society has high-speed people conveyors, like the slow ones you see at airports. These are massive where you could go to a movie theater or shopping on the road while it is moving. The closest we might ever come to something like this is a train.
The most convenient form of transportation is automobiles, but you need much infrastructure to support it.