My cousin would try it, and she would bring me

Well now we need to design the train with all seats facing forward and restraints to keep people in place, and we need to have staff abord to do do a safety check that everyone is seated and strapped in before we can get those 2 seconds of theoretically-survivable acceleration.

Come on. This is cool from an engineering perspective but will never be used on an actual passenger train.

As other commenter pointer out direction of force is important. Horizontal force is much less dangerous as it doesn't drain your brain of blood as much as a vertical one. If I recall correctly humans can survive 20-40 Gs of horizontal force compared to just 5-9 of vertical.

What about eggs lol

Autonomous 500kph cargo trains would be fantastic.

Call me a victim blamer, but if you let your enemy build a superconducting maglev rail from their territory to yours, I feel like that's on you.

You can't think any non-living thing someone would want to transfer beyond weapons? 😂