An interesting way to help the environment. Their website says:
In 2006, we recruited the participation of more than 500 employers and 5,000 commuters statewide. Together we helped to reduce traffic congestion and auto emissions by eliminating 11,400 auto trips, 117,000 auto miles, over 3 tons of harmful pollution, 4,600 gallons of gasoline, and $76,000 in commuting costsâ€¦ all in a single day!
Read about it at: http://www.gomaine.org/cawday/