Every sci-fi movie of the last 50 years has solved that problem: you don't use trains; you put the cars on the rails (by grouping them together into roller-coaster-looking setups.)
> maybe they don’t want to ride on a rail
Same here: cars on rails can, in most conceptions, signal to the rail system to switch them onto an offramp that dumps them back onto a road.
Basically, here, "rails" are serving as safer replacements for highways. Every road that isn't a highway would still be a road. You're just enabling people to, effectively, "have their car take the train", rather than having to leave their car at the train's parking lot.
Every sci-fi movie of the last 50 years has solved that problem: you don't use trains; you put the cars on the rails (by grouping them together into roller-coaster-looking setups.)
> maybe they don’t want to ride on a rail
Same here: cars on rails can, in most conceptions, signal to the rail system to switch them onto an offramp that dumps them back onto a road.
Basically, here, "rails" are serving as safer replacements for highways. Every road that isn't a highway would still be a road. You're just enabling people to, effectively, "have their car take the train", rather than having to leave their car at the train's parking lot.