One thought I've had is, utalize the bike lockers available at some of the park and rides, at least there are a few here. That way you could ride the bus to the bike, and ride the bike to work, and come back the same way.
An idea a co-worker has had for me, it bring the bike to work and ride home, then ride back the next day, that way I 'm only doing 25 miles one way and not a full 50. I'm still trying to figure this out, and in the mean time take care of the car that broke down in work's parking lot.