Someone asked: "The technology behind trains that make them emit less carbon can it not be used on cars?"
Here's my answer.
Technology behind trains that make them low carbon:
1. Overhead catenary for electric propulsion without the need for heavy batteries
2. Steel wheels on steel rails for very low coefficient of rolling friction
3. Concatenation of wagons so that only the front one sees air drag
@lalitpatnaik Car enthusiast: *nods while writing down "remove tires, drive on rims" and "tailgate more aggressively"*
@peterdrake
4. Large number of people in each wagon.
CE are "get the extra-extended cab edition"
@lalitpatnaik