[double_nan]

There is no good public transit even within bay area (where SFO and SJC are located). Without public transit HSR is close to useless. How HSR will make public transit to appear?

[kolinko]

SF is small enough for Uber and Lime to solve the issue - trying to use your own car to get around in SF is not the best idea.

For South Bay, if you're there for business, yeah - you probably need a car.