While you can make your car greener, nothing is as green as walking or biking in place of driving.
The Pedestrian and Bicycle Information Center equips you with health and safety facts, and seeks to educate drivers and pedestrians. They also provide bicycle maps, and laws concerning pedestrians and cyclists. The site is a great place to get a variety of information concerning walking and biking.
Learn more here.
Earthgarage – Greener Car. Fatter Wallet.