Automakers shun fuel efficient technology for fuel

Shouldn't automakers be more focused on fuel efficiency, rather than on alternative fuels?

I hate being critical of the biofuel movement, but it is simply a fact that corn-based ethanol is just not a very good bio-fuel. Moreover, there are plenty of questions still left unresolved regarding bio-fuels, especially until cellulosic ethanol is economically achieved.

For example, if we triple or quadruple ethanol consumption, how much will food prices increase? Also, considering that water is more and more labeled as the next oil, is it wise to use so much of this precious resource to fuel our vehicles via water-greedy corn? Furthermore, will global warming affect our ability to produce many bio-fuels? And that's just for starters.

Finish Fuels rather than fuel efficiency