Like the idea of a hybrid car that goes 40-50 miles on electric power, gets 80+ mpg and can use gas or LPG fuel? Then the Amity is your car (just beware that its got a top speed of about 30 mph. Oh, and it's just a one-off prototype. Sorry).

If you're in the UK, you can help a new biodiesel user - McDonald's - every time you eat there because the company announced today they will convert their entire UK truck fleet to biodiesel that McDonald's will make itself. Look, it's the green arches.