I’ve been spending a lot of time on the Caltrain and my impression has been generally positive. If the SF bay area cannot manage to get public transportation working in the peninsula, at least there is a competent private transportation alternative.
Sometimes the congestion is just ridiculous, which inspired me to take this picture. You can’t easily tell, but I took this photo from inside the bike car while I was trapped and being shaken around for 30 minutes. And I paid good money for the experience! What a world.