In rush hour in plenty of cities, trains will almost always be quicker, because they can move more people per hour than the road network can. (If you look at some metro systems, you can get up to 60,000 passengers per hour on a single track; for a highway, 2,000 cars per lane per hour is considered good: if you're all in SOVs, you're talking 30 lanes in each direction to be comparable with a single train line.)

At least where I live, parking is sparse and therefore expensive. That's a good thing, because parking space is a waste of land that could be put to a more productive use.

So yes I still prefer the train. Buses are cool too!

What if the 'train' picks you up at the door and gets to your destination exactly when expected? would you still prefer to park autonomously blocks away?