Hydrogen trains, battery trains, diesel trains, all of those are stupid ways to power a train
What we should be doing is powering trains with the magical power of 80s synth pop
If synth Pop isn't strong enough, we will use 70s punk music
what about prog rock
Progressive rock is too powerful a fuel source and most only be used in dire circumstances
There is an ongoing romance between 2 of the passengers and you progress their stories by dropping them off at specific planets and talking to both of them. The 2 passengers are lesbians and if they get married the reward you by grnating your train the power of jazz music