> They had started significant expansions right before the pandemic, allowing a long (but no traffic) ride possible from Oakland to San Jose.

They're still working on this, with four more stations planned beyond Berryessa (Little Portugal, Downtown San José, Diridon, and Santa Clara), plus an additional infill station on the Berryessa line. I think that would be really cool. Unfortunately it looks like this new extension won't be that competitive with Caltrain as a way to get to San Jose from San Francisco. Maybe at non-express times.

Also, it looks like it won't be complete until 2040!?