Convert a traditional car to biodiesel.
Believe it or not, retro diesel cars are ideal for running on biodiesel: a domestic, renewable fuel made from nonpetroleum sources (even old cooking oil!). Once you replace the fuel lines, the only challenge is finding the juice (about $3.50 per gallon) nearby. For more info, go to biodieselnow.com.
Buy a new biodiesel or hybrid car.
Quiet and powerful, the Mercedes Bluetec runs on new, eco-friendly biodiesel fuel and looks fantastic while doing it. And props to Prius, the first mass-produced hybrid and love object of celebrities and environmentalists.
Ride a bike.
Tired of a good old cruiser? Try a tricked-out, upholstered trike from Workman Cycles or a Schwinn electric bike with an innovative battery that takes you 60 sweat-free miles.
