[denni9th]

While autonomous cars might be able to reduce traffic, they cannot eliminate it entirely. There is a limit on the number of cars which can drive down a road in a certain amount of time. If more cars wish to use the road than capacity allows, then there will be traffic.

That can only be solved by increasing capacity, either with more lanes or more roads in the same direction, but this is typically not feasible.

[RandallBrown]

Any type of transportation will eventually suffer from a lack of bandwidth.

Busses and trains are better now but they suffer from a major problem of not taking people where they actually want to go.

I don't think it's an either/or problem. We'll have autonomous busses, trains, and cars all working together to make travel MUCH better.