SLC, and every other major American city for that matter, is never going to solve their smog problems when they are built such that inhabitants REQUIRE the use

SLC, and every other major American city for that matter, is never going to solve their smog problems when they are built such that inhabitants REQUIRE the use of a vehicle to perform the necessary tasks to exist. Elon Musk might have a solution (thought I'm skeptical) but public transportation cannot to fix the environmental effects of urban sprawl.