I occasionally feel bad for the folks on the LRT alongside I-84 on the days I commute to the office. The traffic is congested and very slow at times, and I still beat the train. And that's even before getting to downtown, where the train just crawls from station to station. I wish we could have a real subway.

I suspect the best option for most suburban cities to reduce traffic and air pollution is to strongly incentivize employers to allow remote work when feasible.