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Hydrogen Fuel Cell Cars
First off, I think development of hybrid vehicles is moving along way too slowly. By now, just about every vehicle that's currently available powered solely by an internal combustion engine should also be available as a hybrid. No doubt I'd have a hybrid now (because I hate spending money on gas) if a model that suits my needs were available. Secondly, although hybrids use much less gas than ordinary vehicles, they still use it.
CNG powered vehicles would be a step further than hybrids because their emissions are almost zilch. CNG is very clean burning, but the problem I see this creating would be with the supply of natural gas. There have already been times when the industry has blamed low supplies for price spikes. Sound familiar? Now that most people heat their homes with natural gas, if everyone started powering their vehicles with CNG, the energy burning consumer would once again be at the mercy of the greedy energy providers.
It seems to me hydrogen power would be the best of all for the obvious reasons, although if they became the norm, I'm sure consumers would charged for water accordingly. The one thing that puzzles me the most is why it's taking the auto makers so long to develop alternative powered vehicles. I've heard a couple different theories on this. One centers around the idea that big oil companies are doing everything they can to slow down development of APV's because they realize if these vehicles are produced and sold in large numbers, this would end their strong hold on the world market. This is similar to the theory that cancer researchers don't want to find a cure for cancer because the massive amounts of money now flowing their way would stop. Another theory is that auto makers just aren't devoting enough R&D into APV's because of the expense. I haven't been able to varify any of these claims, so as far as I know, they're just theories. Whatever the reason, something or someone needs to light a fire under the butts of the auto makers to get them to expedite development before these never ending increases in gas prices completely destroy the world's economy.