Below the fold is an hour-long video of a Google talk by Reed Benet, a bio-fuels-focused Ph.D. student at the University of California Davis Institute of Transportation Studies. Much of the second half of the talk has the audience asking, where is my diesel-hybrid and why are there no diesel-hybrids? As you may know from my article on VW, I don't think clean diesel is that great. Others think otherwise.
IMHO, a diesel hybrid would get amazing mileage but it could also be a marketing oxymoron. About 33 minutes into the talk Reed says there is really no invention that puts diesel engines "in compliance" with gasoline ones. Carbon is not the only problem with fuels, just like fuel efficiency is not everything. Diesel engines are a lot cleaner than they used to be, but diesel vehicles are not perfect.
BOLD MOVES: THE FUTURE OF FORD Step behind the curtain at Ford Motor. Experience the documentary first-hand.