I travel to Japan twice a year for business and for vacation, and coming back to the Bay Area and dealing with its transportation infrastructure is always jarring.
I find the Bay Area very difficult to get around. The roads are jammed with commuters who live far from their workplaces due to the housing situation. There is not enough housing near job centers, which bids up the prices of available housing to very high levels that requires FAANG-level salaries to clear unless one wants to have an army of roommates. Thus, many people have to commute, some from far-flung exurbs and even from Central Valley cities like Stockton and Modesto.
Public transportation in the Bay Area is better than most American cities, but it’s still underpowered for the size of the metro area. Not all residences are served by trains, and bus service is often infrequent and subject to delays. Missing a connection can lead to major inconveniences (such as a long 30-60 minute wait) or even being unable to reach your destination without an über-expensive Uber or Lyft ride. There’s also matters of safety and cleanliness on public transportation; every now and then I smell unpleasant odors like marijuana and urine, and occasionally I see sketchy people.
It’s a major step down from Tokyo, where public transportation is ultra-convenient, reliable in non-emergency situations, impeccably clean, and generally safe.
The sad thing is the reason the Bay Area lacks Tokyo-style transit is not technology, but social and political issues. If it were merely technology, we’d have solutions by now.