I fully support public transit, including trains, but the geography of the US is not conducive to dense trains due to the urban sprawl. Ideally the sprawl is m

I fully support public transit, including trains, but the geography of the US is not conducive to dense trains due to the urban sprawl. Ideally the sprawl is minimized for maximum efficiency (in both enhanced inter-personal cooperation, living cost) but it's hard to sell that when gas is cheap, and land is plenty. There's another issue unique to the US, is that there is a diverse spectrum of races, income levels, and cultural groups that make it hard for these different groups to live together in a dense area peacefully (as compared to a homogenous place like Japan). Much of the inane urban planning in The US is actually a result of people just trying to prevent black people or poor people from moving into their neighborhoods.