Commuting to work on a bike is a great way to spend that otherwise-idle time. I've started keeping track of mileage this year, although I've been commuting for 4 years by bike.

So far this year, I've ridden 827 miles from commuting. That's over 75 hours on my bike that would otherwise have been spent in a car on on a metro.

So Happy Bike To Work Day!
tulip.