> Either each car needs a driver or you need something to keep all the trailers precisely lined up.
A perhaps very stupid question, but why not make the cars self-driving the way we built self-driving robots from LEGO as kids? That is, line-following cars. It's effectively a virtual track - but I imagine painting a line or building it from cheap plastic would be cheaper than putting actual rail tracks in, and unlike generic driving automation, line-following is an old, well-understood and solved problem.
A perhaps very stupid question, but why not make the cars self-driving the way we built self-driving robots from LEGO as kids? That is, line-following cars. It's effectively a virtual track - but I imagine painting a line or building it from cheap plastic would be cheaper than putting actual rail tracks in, and unlike generic driving automation, line-following is an old, well-understood and solved problem.