Jofm5
"So the laws of physics apply to a train in a different manner to an airplane ?"
No this argument is just silly for several reasons, trains v/s planes. Aircraft endure movements and forces during NORMAL OPERATION that trains simply do not. A rail is straighter and more level than a taxiway or runway and certainly AIR.
Trains accelerate,decelerate,climb,sink etc.etc at expected values. Never been on a train and experienced turbulance. I have certainly gotten jerked around in the cabin of an aircraft during taxi out in a freighter.
There are many more factors like the logistics of getting sardines seated.