"Take it slow and save big on gas"???????????

Want that new Mustang? Need that new Hemi-powered SUV, but you are worried about gas prices? Not to worry, according to Take it slow and save big on gas, you can driver your V8 and still reduce your gas mileage, just drive slow and drive at steady speeds. Am I missing something here? Who buys a Mustang to drive slow and steady? Pay extra for a V8, but don't use it. Now that makes sense.