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Five least-green vehicles

We are a generation seemingly obsessed with the environment, eager to cover our carbon footprints in any way possible--or at least give off a green vibe visible to our neighbors). And though many car buyers are jumping on the hybrid and electric bandwagons, the majority of us still crave brute-power cars and trucks. While being environmentally friendly is nice, there comes a time when you just have to be mean -- eco-mean, in this case.

You could own Jeremy Clarkson's old Jaguar XJR

This is quite possibly the best Jaguar XJR… in the world. And that's because it was formerly owned by a certain Jeremy Clarkson. So you can bet your life he spent many hours smoking in the big supercharged cat.

Ford F-150: Diesel model is delayed

A diesel engine for the Ford F-150 light-duty pickup is looking dicey. Ford had said it would sell a diesel F-150 beginning in 2010. Last spring, dealers were shown a 4.4-liter V-8 diesel said to deliver more power and torque than the F-150's 5.4-liter gasoline V-8 and offer a 20 percent fuel savings.