Originally Posted by
acidfast7
Do it the European way and get two crap bikes.
Ride one from home to train and leave it locked outside. Ride other from train to work and leave it locked outside.
Both bikes should cost under 100 (insert local currency here) and be heavily used.
While generally a good plan, I don't know if all areas along Caltrain have a place you can leave a bike, particularly overnight.
Leaving a bike at caltrain in SF for the day is definitely possible, the small bike shop in the caltrain station does off secure bike storage and I think it may even be free or very cheap (part of the lease agreement).
Not sure if other posters are familiar with Caltrain, but its probably the easiest train to bring bikes on I have ever seen. They have entire bike cars. Many of my coworkers do this and it works very well for them.