How Tesla can sell 'full self-driving' software that doesn't really drive itself
https://edition.cnn.com/2021/10/09/cars/tesla-fsd-legal/index.html
Truly full self-driving system will be difficult, because there are many unimaginable accidents and engineers have to think about how to deal with each accident automatically. If self-driving system is easily feasible, it would have been applied to almost all of the railways.
