Many years ago, when I had to travel to Korea to work in a couple of major IC manufacturing plants, I noticed that one way they had of solving part of their traffic problems (and they had really bad traffic problems even despite the commuter trains they had), was to have employee housing accommodations right on site. They had their own employee hotels and/or "barracks"..I guess you could call them campuses. This was mostly for young and unmarried employees.
When I worked in Guadalajara, Mexico, they helped with their traffic problems by having hundreds of Greyhound-like and school buses that I would see in the parking lots every day. And despite the large parking lots at the plants, where they parked the buses...it was really hard to find a parking space for my rented car. I initially took taxis but the smog was so bad in Guadalajara that having a rental let me close some of that out. Mexican taxis don't close their windows and turn on the air conditioner...so all that choking filth came through the windows in the taxis.
China was a mess..traffic-wise and pollution-wise..air pollution like Mexico.
So, I hope the US doesn't become like these other countries...re: pollution. I had to frequently go to LA, as well, and I occasionally noticed some really bad air pollution days. Maybe LA is our canary!
They are trying to get a hi-speed train system to connect SF and LA...I sure envy places that have high speed trains and a very well connect network of commuter trains that I saw in Europe. Of course, even with a great commuter system, some of these countries are so populated and packed that they still have a terrible air pollution problem. And even water pollution...it was very shocking to see the Huangpu river that flows through Shanghai..past the Bund boardwalk or from the Yangpu bridge. The current is very strong and you can see all kinds of unspeakable sewage and trash rushing by.