Let's build self driving cars that go on special self driving roads that handle all the steering. To minimize fuel losses from friction while being long lasting, the wheels should be made of some kind of metal, and have a specialized shape to stay centered on the self driving road.

Heck, we could market this to trucking companies, with the low rolling resistance, they could hook a bunch of trailers together! Make some sort of a linked-cargo-hauler, that goes to special depots specifically for these extra long contraptions.

I'm so glad I alone thought of this breakthrough in transportation!

Those aren't trains. I don't give a shit if they want to use the word "invented" if it means we actually get trains.

Sure techbros. Be revolutionary. Invent the subway.