One thing I noticeed is that Earth Ponies are f---ing strong!
I mean it takes only four to haul a six car train at substantial speed.
The train I ride from VA to NJ is a six car train. It takes a 4,000 horsepower V-16 turbodiesel to get it moving to ~60+ miles per hour or an 8,000 horsepower electric locomotive to get it even higher.
I mean, is that their innate magic, great strength?