everyone wants the newest technology right now, but they forget the money that needs to be spent to get the supporting infrastructure in place. one other thing you have to understand is that there is no one answer to the coming energy problem. hybrids help, biodiesel helps, E85 helps, pure electric cars help. but each is not the be all, end all for solving the worlds energy problems. now why focus on hybrids rather than pure electric cars? you have to wean a society built on using gasoline, off that gasoline, and on to electric. the way to do this is with hybrid cars. you make the electric power plant more powerful, and more capable, and the gas power plant less powerful to the point where it only keeps the batteries charged, and supplies electrical power to the cars systems. at this point it becomes easy then to switch to all electric cars. and for those of you who keep thinking that we need huge amounts of corn to make ethanol, we dont. ethanol can be made from a variety of renewable sources. dont believe me? look at all the different consumable alcohols on the market, made from grapes, sugar cane, wheat, rye, barley, potatoes, the blue agave plant, cactus, etc. as for the expense, much of that can be traded for selling the used mash to farmers as animal feed, after it is dried. the used mash is much easier for animals to digest than the feed currently used.

If you refer to pure biodiesel, think etahnol. Ethanol use has ramped up corn production, but cut corn for human food consumption and driven up food prices.Biodiesel would require diverting soybean and other grains from food use and drive up prices of both food and fuel. I haven't seen the most recent energy statistics, but ethanol requires almost as much energy to produce as the ethanol is supposed to save. The same may be true for biodiesel at the moment.The electric car is making a bit of a comeback, but the battery technology isn't there yet. When battery technology can proivde both the necessary number of batteries (no small feat itself) as well as allow people the ability to travel further on a charge (and find a convenient place to recharge if they are driving long distances), there will be a significant move to electric.We also have to figure out how to supply the electric energy. Electric supply and transmission facilities are not presently adequate to take over a full electric fleet. So much electricity production is based on oil and coal that ramping up electricity production could have very negative environmental effects.It is unlikely that electric can replace diesel or gasoline in all respects. Heavy trucks and equipment require a high energy-content source that can be stored in a relatively small area, gives a large range of travel and can be used in an engine that has the force to haul heavy loads. At the moment, electric batteries are unlikely to fill those requirements.

They aren't doing this because they would have to shift major parts of their production line, which is to costly, and major automobile companies make a large portion of there parts. And since an electric vehicle typically has fewer parts that an gasoline vehicle, they loose some money there. To get more information watch the documentary, "Who Killed the Electric Car?"

Diversifying fuel sources is the key and last I checked biodiesel is not the greatest for running automobiles. We do need, however, a lot more options and a lot more research. I think with diversity in fuel and power resources/sources technology will advance. Bottom line is that there will be no, ONE solution.

Hydrogen is much cheaper and can even be produced at home using a hydrogen generator and can be powered by a couple of solar cellsand when burned reverts to water with no other emissionsVery simplyBatteries are charged with electricity produced by fossil fuelsBio fuels also have to be produced using electricity and take up farming land that would be better used to produce foodIf too many farmers start producing bio fuel the price of goods in the grocery shop will sky-rocket