People used to believe they could change lead to gold, too. Then came the development of what we call "science".
People used to believe that perpetual motion was a distinct possibility. The laws of physics sort of screwed that up.
Mr. Obama, engineer deluxe, also soberly told us that we could save more oil with properly inflated tires than we could produce by drilling up known resources. Babs Boxer, stupidest woman in the U.S. Senate repeated that larf just days ago.
Reality is different. Heavy trucks today universally use sophisticated computer engine controls to wring every bit of fuel efficiency possible out of a gallon of diesel fuel. They are universally turbo-charged, partly to assure complete burning of fuel to reduce emissions. We are bumping the limits of engineering...or as we realists call it "science".
Obama may BELIEVE any number of ludicrous things are possible. Were he just an ignorant fool, that would be one thing. But having a man MANDATE unicorn engineering is DANGEROUS to a nation that depends on RATIONAL decisions.