Spare the Air is launching an interesting initiative for Bay Area employers. From the website:
The Great Race for Clean Air is a friendly competition between Bay Area employers to determine who will reign as the company with the best Bay Area Commuters! The competition will encourage employees to use commute alternatives such as transit, carpooling, vanpooling, walking and bicycling. The Great Race runs from September 1 through October 31. Registration runs through August 15.