[TundraBay]

There's so many unknowns. . . Diesel is more easily synthesized from plants (biodiesel a better bet than ethanol); it is easier to refine from crude (if the refineries are working); it is more efficient within the engine itself; the engines last a lot longer in actual practice.

Despite the hybrid hype, I think they'll be long gone soon enough. Their real world mileage is much worse than claimed and they're only decent for slow, stop-and-go traffic. Unless a breakthrough in battery technology happens which allows pre-charging of your hybrid so that you get a few hundred miles before the gas engine even starts. I've done a fair bit of reading on these and the bottom line is: ALL HYPE.

I think this truck's got a shot, if they don't price it out of the stratosphere. Which they'll need to do (price it competitively) if they want to sell enough to drop their fleet average MPGs.