trains achieve 500 ton-miles per gallon for cargo. trucks 150 ton-miles per gallon for cargo. a passenger car is 2 tons and achieves 30 mpg so 60 ton-miles per gallon but that is DEAD WEIGHT of the car itself NOT useful cargo.

THIS is why lefties love trains. trains reduce the carbon footprint of cargo ( you ).

unfortunately because a subway train can take about 1,000 passengers to approach even a fraction of its capacity it has to operate in extremely dense areas that look like this:

from there the challenge Urbanist filth faces is to convince us that we want to live in such an area rather than in an area that looks like this:

towards that end they bend into a pretzel with the mental gymnastics to convince us that we would be happier to live with noise, stench, pollution, homeless, niggers and prostitutes and pedal through all that on a bicycle in rain and snow than enjoy an air conditioned self-driving personal vehicle on a way to a home with a backyard and view of the sky.