Will ethanol-driven cars take over fuel-powered cars in the future?

It will be a a very difficult changeover, particularly here in the US. Argentina, along with other countries, have already made the switch. Because the U.S. is so heavily controlled by energy companies it will likely be a long time before we see a change here and I would imagine the first person who takes a giant step forward will likely be faced with serious opposition and might even be targeted for assination. It would be a serious threat to some major investors and corporations.

Ethanol over gas/diesel NO Not Really unless you like driving less than 3,000 miles a year. Ethanol is a negative fuel product. Takes more fuel to produce a gallon than gas/diesel does. The country would have to cultivate 3 times the present land being grown now to supply 25 -40% gas/diesel supplies. All at negative fuel production.

If you think the Middle East is volatile check out the recent 5 years of droughts in crop areas. Be aware of up coming water wars in U.S. Oh if corn is going to produce fuel You will find you food bills tripling (3x $$). Try 10$ a lb for meat.

Oh ethanol has a btu rating at 20-25% less than gas.

You spend more for a low energy fuel with you cash.

Ethanol is a fuel! Check out Brazil -- they have been on almost 100% ethanol for years and years. Here's the problem: Ethanol costs more to produce than crude, it isn't as efficient thus will use more fuel than petrol and the sheer amount of farmlands that would have to be made available in order to grow the corn or sugarbeets or whatever biomass used for ethanol would be massive. This could cut into our food production, which would raise prices even higher. This problem should have been dealt with fifty years ago but, alas, with a free market system, the money flows to the lowest point, which was for decades, crude oil.

Just was watching a program on cable about how Henry Ford & George Washington Carter were working on running vehicles on peanut & soy oil, as they realized petroleum was not an infinate product. Why, oh why, did car manufactuerers not stay that course? Our soldiers would not be dying in the Middle East now. But, I digress: yes, ethanol fuel will overtake petroleum fuel, biodiesel will overtake petrodiesel. We really have no choice but to pursue these and other alternatives.

To clear up your question ethanol is fuel. Will it take over gasoline or diesel cars? yes.

Doubt that ethanol will totally take over they will come up with something even more expensive that works better.

My theory is; in the future we will drive battery powered cars. Service stations will take our depleted batteries and exchange them for fully charged ones.

If they can engineer them to produce the horsepower cars do now then yes. The hold out is that people still want good horsepower.

Willy nelson has been using it for about,6 years,including his tour bus.change the future..more farmers,more employees,more factory's,more employees,

It will, as we'd have no choice. By then.