I notice that you say "high speed" railway.
What is the difference between high speed and low speed when it comes to railways?
There are a huge number of slower railways that are automatic, and an even greater number that would be if unions were weaker including sections of the London underground.
Name a single function on a railway that cannot be given to a computer.
A huge number of the richest and cleverest people in the world think you are wrong about autonomous cars and are betting their house on it.
One of them has done what NASA never did and lands the first stage of his rockets on a barge.
Watch All 5 SpaceX Rocket Landings in This Epic Video
You care to bet against him making a car?!