If we suddenly went 'cold turkey' on Gas powered Autos what would happen to all the American auto making companys? This world today seems to be about High priced gas sucking SUV's and many other types of autos that folks want to be 'different'..or because they're cool. I could totally see the automakers taking a huge blow initially if we suddenly had to convert to a boring same-as-everybody else alternate fuel vehicle-not to mention production would have to catch up to the demand for these vehicles if we quit..the oil. Sure they could catch up but I def. don't think it would be a smooth conversion.I wonder if that scenario would effect the US/world economy at all 
. I believe there is technology today to have Gas vehicles that(even v8's) get a ton of MPG. They'll never be produced however, since it would hurt auto sales and Gas demands and oil company profits. Such is the world the way it is now..like Dressel says..and we just have to deal with it 'cause there's nothing we can do about it 
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The American automobile industry is going to be in a world of hurt if they don't start producing more and better alternative fuel vehicles. If we don't, someone else, i.e. the Japanese, will. Just think how much better the auto industry would be doing today if Ford and/or GM had developed the first reliable, mass-market hybrid cars instead of letting Honda and Toyota do it. Gas-electric hybrids don't make up the majority of American automobile purchases yet, but that segment of the industry is growing rapidly and right now foreign automakers are reaping the lion's share of the profits.
The market for hydrogen fuel cell cars would be a lot different though because even if US buyers want them (and I'm one who does), they won't sell well because there are only a handful of places in this country to purchase fuel. Until we build a hydrogen fueling station infrastructure, no one is going to buy such cars. The good thing about that is that it gives the US automakers time to develop really good designs for these vehicles and to bring them to market in such a way as to lock out foreign competition. It probably won't happen though and people will be driving Honda & Toyota hydrogen cars long before Ford or Chevy decides they'd better start playing catch-up.
