Just unveiled at the Detroit motor show is this thing, the literally world-saving Ferrari F430 Spider Biofuel. Place Jeremy Clarkson under 24-hour suicide-watch – Ferrari is “going green.”

The remixed and tuned F430 runs on the 85% ethanol 15% regular petrol mix that’s popular in the more forward-thinking bits of America. Ferrari’s doing this as part of a commitment it’s made to reduce its car range’s exhaust emissions by 40% in time for 2012…