I'm about to starting riding Caltrain from SF to Mountain View for my commute. I've found the bike map for Mountain View, so I know where and how I'm going. My question for experts is about the bike capacity of trains. Caltrains website has a lot of info about why they can't expand capacity. It's enough to scare me into my car (I can't afford to wait half an hour for another train). How often do you have to wait for the next train? Alternatively, how early do you have to get there to ensure a spot on a rush hour train?