One thing to consider is commuting three days a week, leaving off Monday and Friday. Monday you can bring in work clothes and any other supplies you need. Friday you can take home bike clothes that you left at work. This gives you a chance to adapt to biking. And you are fresh for a long weekend ride if you want one.

Another way to get into it gently is to drive in to work, bike home, and the next morning bike in to work, taking the car back home at the end of the day. This gives you a one way commute if you have a safe place to leave your car at work.

Enjoy!