Add More trains Please

I noticed that all trains can go no higher than 137 mph and some trains that can go more than that in real life cant go higher than that.Also trains that are meant to be slow can go really fast.Can you make it so different trains can go different speeds so its realistic?I also think you should add more trains like more Amtrak trains or a bullet train.Can you also make it so you can fully customize the cars on the train?

Matth3w813 about Train Sim, v3.6.1