While I get that as a stop gap when your city hasn't built enough PT, car to the station sounds like a good last mile solution. But my personal preference, and how good public transport is set up, is that in 90% o more of the trips around your city, public transport should never be more than a walk away.

This is not to say that cars should be removed entirely (for disabled people where PT accommodations are difficult, delivery, emergency vehicles etc). Just that you shouldn't nearly as many cars for the last mile, in a well designed system.

This is how I try to live, mostly. Can't get there by public transport? Well I'm not going unless I have to then 👍 because cars are expensive and I'll get a cab or rent one if I have to. But I live in a fairly car-centric city. It's totally possible to have your entirely city be accessible by foot + PT.

I'm not sure if the driverless car tech would ever be viable, and why not just do driverless BRT conversions, which is possible right now, and not that expensive.