I noticed in the ice 3m cab picture that theres nothing but a thin glass wall with door between the driver and the passengers there also a similar wall and door set up on almost ever cab car type train,so if a airplane cockpit has a secure door to try and keep intruders out,why don't these train cab cars have better barriers against intruders breaking in?You could cause a train wreck just as easy as a plane crash with such limited barrier protection.
If you incapacitate a pilot the plane falls out of the sky killing everyone on board and possibly some on the ground. If you incapacitate a train driver the train just stops due to the safety systems and all the other passengers batter the intruder for making them late.