Really? I don't see how that is so. Because an average car still weighs 3000 pounds. And 3000 moving pounds versus 200 moving pounds is still more than 10 times difference in energy.

I have always felt that the way humans share space with any kind of vehicle is perilous from a physics standpoint, relative to other risks in daily life. I actually think there will be a new type of city where they are separated by physical boundaries, levels and/or bridges etc.