I do a half-commute. I park in a lot off a trail, ride the trail halfway in and then the rest on the roads. It cuts out most of the traffic and keeps my commute manageable at 14 miles (more, now that they took the dang bridge out). It doesn't save as much gas as a full commute, but it also enables me to do my grocery shopping on the way home since I have my car (and if I stop at the rock gym I don't have to worry about it getting dark out and riding).

You should see if you can finagle something like that...

K.