> If we put more effort into self-driving busses and autonomous trains ... we would see much greater dividends on our investment and far fewer "unintuitive" err

> If we put more effort into self-driving busses and autonomous trains ... we would see much greater dividends on our investment and far fewer "unintuitive" errors. Everything you said made sense, except focusing on mass transit for FSD, for two reasons: The intent of focusing on bus/train automation comes from an illusion of control (we can control the lane/track, thereby) – hence we tend to rudimentarily attribute easy outcomes to it (low risk, high value). If we ignore the control part and properly think about it – mass transit actually higher risk for lower value. 1. Lower value: For something that involves 100+ people on dense economic centers, it's already running at an economy of scale where a human driver just makes sense. I live in Germany where the metro trains & trams are already crazy automated. There is a human driver there just in case, more as a supervisor for the people riding (controlling hooliganism, jammed doors, helping challenged people, dealing with emergencies, etc). I see German trains as already running on FSD4. FSD5 full automation is a waste of time here. Using buses for last mile coverage for few passengers, aka treating buses as "big taxis" is probably worse environmentally than actual taxis. 2. Higher risk: By the same logic you said for cars – "far fewer unintuitive errors" – at a much higher capacity of mass transit – is far more catastrophic. Imagine a self-driving train had just 1 accident in 10 years, but it affected 1000 people. It's sheer terror. Who is liable for it? Government. The problem with going down this mass-transit-first route is, one error means legislating away the entire sector. Cars are actually lower risk (individual choice, individual liability, accidents don't deter others from adopting) and higher value (last mile, moving away from the dense urban city plans that come with high rents and chokepoints which are crippling even to my beloved, beautiful German cities where even with all the urban sprawl, last mile is still a problem outside A zones).