As we close out our Detroit Auto Show coverage, we turn to the big kahuna for their green announcement.

That’s right, even Ferrari is trying to go green with their announcement of the F430 Spider Bio Fuel concept that runs on a standard mix of 85% natural ethanol and 15% gasoline, resulting in a 10HP power bump and an imporvement in fuel economy of 5% over the standard gas-only V8.

Sure, it’s not earth-shattering, but it’s an excuse to look at a Ferrari.