Do roads have to go more places? Are they dramatically cheaper and easier to make and cheaper to maintain than train tracks? Or do we just already have a bunch of them?
Mind you I'm not taking about last-mile dirt road up a mountain to one family, but the massive arteries with enormous throughput that constitute the vast majority of lbs/mile of shipping.
Railroads have much much stricter requirements with respect to maximum allowed curvature and slope. So yes roads can go far more places than rails can.
