> $20+ per ride is affordable?

In the US, the unsubsidized price of a ticket is close to this amount.

> Waiting 10m+ for your ride and slowly sifting through traffic is quick?

In my city, it's difficult to pick any 2 points that are faster to get between by public transit vs. taxi.

Every city is different, but trains rarely make sense in the US (outside of NYC).

Right of way is the huge advantage of trains, it would be great if self-driving vehicles could have that same advantage.