I dont think we are likely to see a Diesel Hybrid. As good of an idea as it may be.
And i doubt we will really see that much of an impact int he US when the new European Diesel standard hits in 2007 either.
And heres my reason for why.
The oil cartel is still a business. And as a business they have to move their major product in order to make money. That major product, is gasoline. Gasoline nets the largest profit margin of the petrol chemicles, becuase its refinment process is fairly advanced, the amount of waste production is minimal, and most importantly, your final product can be thinned to stretch it farther. And no, your not crazy if you think that sounds a bit like a distribution chain for cocain. But anyway...
They have to sell gasoline to see profits.
Now, Diesel on the other hand, though supplied buy the oil cartels as well, doesnt HAVE to come from them to be produced.
Becuase if you can produce oil, in any form, vegetable, Canola, Soybean, COconut, Corn, Olive, Whale, you name it, you can covert it into a combustable fuel, and distill it into Diesel. Completely circumventing the oil companies, and putting the production into the hand of private individuals, and dare i saw, the government itself. Slashing a huge portion of their profits right out from underneath them.
So its better for the oil companies to support "gas saving" technologies like Hybrid cars, becuase its better to loose less then one percent of your profit margin, and still sell your major product.
Then it is to support an alternative that could potentially take a very large chunk of your profits away.
Now you may be asking why does Diesel work in Europe then, where over 50% of the vehicles on the road are powered by Diesel? Well, its simple really. WIth the overly socialist thinking of the countries that make up the EUropean Union (read: money hungry tax states), they have regulated their oil producers. Guarenteeing the goverment gets a very large piece of the pie. And infact alot of the major European oil companies, are owned by European Union countries, Namely France (Total/Fina/Elf) and the Netherlands (Royal Dutch/Shell) [both of whom had major oil stakes in Iraq right after Gulf War I, and people wonder why they had a problem with the US going in there and giving it back to the Iraqi people, but thats another story, and a different political discussion]. Anyway, becuase the governments regulate the oil production, the diesel has to come from its producers, and therefor the profit margins are maintained. So diesel works in Europe, becuase there is no chance of Biodiesel ever really taking hold, as long as the various oil producing contries in the European Union have their say about it. Becuase then its just a couple of crazy brits, and a few farmers that get any benefit. Where as here in teh US, the free market, and do it yourself nature of Capitalism, guarentees you nothing, if not the fact that eventually somone else will come along and do it better.
My personal oppinion is that with hybrids being pushed as hard as they are, it only goes to prove that diesel is the better alternative for this country, and they want to try and make sure that the idea of Diesel being better, never gets a foot hold. Becuase if Diesel is found out to be the better option for the typical american citizen, and biodiesel take a major role in the distrobution of the US fuel market. They stand to loose alot of money. And when ExxonMobile is the largest, and most expensive stock out there, the share holders expect profits, and lots of them.
No matter how you choose to look at it the facts still remains... Most americans use the highway, and that means speeds at 60mph and above. I.e. the realm of which hybrid technology means, and does nothing. ANd where Diesels can easily get upwards of 50 MPG, all day long.
In a perfect world, we would all be driving Hydrogen powered cars. It can work for fuel cells for electricity, and for combustion engines as well. The ultimate single fuel, dual powered hybrid that actually truely works in an extremely economicle way.
Only problem is that producing hydrogen is either extremely harmful to the environment, or requires alot of electricity to produce. So its not exactly the best alternative fuel, though the ways in which it can be used, are seconed to none. But it very well could be a viable alternative, especially if nuclear power ever overcomes its smear campaign from environmentalist no-nothings in the 80's, that prevented it from becoming the main power source for the United States. ITs certaintly clean enough, and can produce enough excess electricity, to allow for the production of Hydrogen from water through electrolytic process, seperating the hydrogen from the oxygen. But, i think tis more pipe dream then reality...at least for this country.
Ok, thats plenty to chew on, so ill leave it at that for now.