I try to commute as much as possible during the work week but when I have to visit clients I go by car. It's a beautiful ride (2x 15km) through nature like forrests and even an airbase! On this pic you see my 70's Colnago (upgraded tot Sora&Shimano STI stuff) on the runway of Airbase Soesterberg (they closed this former USAF & Dutch KL military airbase (3km strip)) and made a big ass bicycle lane over it:
http://en.wikipedia.org/wiki/Soester...Air_Force_Base
Love to ride to work!