Originally Posted by yespatterns
This may or may not be an option for you, but I would drive in on Fridays, and take in most everything you will need for the week. That way, you might only need to actually bike supplies in on rare occasions, saving you alot of excess weight, and proably increasing your aerodynamics.
+2 - I've been doing this for a while now. It saves time, saves weight and it's much easier than lugging shoes, pants and a shirt everywhere. Then you could just stick your lunch in a bag that's in your slipstream - no aerodynamic penalty. It's already been mentioned in this thread, but lighter wheels and better aerodynamics will make the biggest difference to your average speed. Wearing close-fitting clothing will help - a puffed out windbreaker is a bad idea.