Tomorrow will mark the end of the fourth week I have been walking to work - everyday. Walking to work is nothing new for me, it only takes about seven minutes each way. I usually walk to work 2-3 days a week. There are days, of course, where it is practical to have a car [running errands, further out appointments, Wisconsin weather]. It started innocently enough. I didn't set out to see 'how long can I go with out driving'. I wasn't inspired by the size of my carbon footprint. I didn't even watch a documentary about the demise of our planet. Truth be told, I wasn't attempting to start a health kick. Gas prices? Nope, I have a very fuel efficient car and I only had to fill every 2-3 weeks anyway. I just decided on March 10th to walk to work. When Tuesday the 11th came around, I had places to be after work, but thought, "I'll just walk back and get my car later". Day after day, I walked. I really didn't think much about it until last week ...