If I remember correctly, trains have almost an order of magnitude (or something in that space) lower friction than cars or basically anything else, which makes them a much more efficient mode of transportation. The problem is just building rails everywhere.
My guess is that this makes it hard for anything that runs on anything but train wheels to compete energy-wise with train-based public transportation systems.
If I remember correctly, trains have almost an order of magnitude (or something in that space) lower friction than cars or basically anything else, which makes them a much more efficient mode of transportation. The problem is just building rails everywhere.
My guess is that this makes it hard for anything that runs on anything but train wheels to compete energy-wise with train-based public transportation systems.