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Biofuel cars

What are they? Cars that run on fuel derived from a biological source -- usually, but not always, plants.

What do they mean to me? Fuel that's 2p cheaper than petrol -- 111.9p instead of 113.9p. Unless you're this list of bioethanol-equipped Morrisons station)

Good if you: Live near a biofuel station

Bad if you: Don't have access to biofuel stations, are concerned about the doubts over how green biofuels are

Models to check out: Saab's BioPower range.

Got any questions about green cars? Let me know in the comments and I'll do my best to help out.