Originally Posted by
treadtread
If you are a two car household, and have safe overnight parking for both bike and car at work, you could also ride to office, drive back, drive to office, ride back and so on.
That would be better on the car, save fuel, and reduce the amount of pollution produced. Cars are very inefficient when cold (i.e., until they warm up) and most of the wear experienced is at start up. So once a day vs. twice a day is much better.
You also may want to study the bus routes and see if you can find a more direct route - maybe by riding a little out of your way.