Because there already are tracks without electricity where I live. When coming from a nearby major city by me, the train has to stop for 40 minutes while they switch from an electric to diesel power car. Same process while taking a train into the city, switching from diesel to electric.
For sim, I utilize iRacing to practice and learn tracks before real life amateur endurance races in champcar and lemons as well as track days.
IMO iRacing physics are so good and the tracks are so well modeled that it’s a very effective learning tool. It’s the first sim since Live For Speed that really feels close enough to real life for me to forget I’m playing a sim.
Plus traffic management and race craft are so crucially important in wheel to wheel racing & I simply don’t get any other opportunity to practice those.