A Purdue University engineer and National Medal of Technology winner says he's ready and able to start a revolution in clean energy. Professor Jerry Woodall and students have invented a way to use an aluminum alloy to extract hydrogen from water - a process that he thinks could replace gasoline as well as its pollutants and emissions tied to global warming. But Woodall says there's one big hitch: Egos" at the U.S. Department of Energy, a key funding source for energy research, "are holding up the revolution. The hydrogen is generated on demand, so you only produce as much as you need when you need it," he said in a statement released by Purdue this week. So instead of having to fill up at a station, hydrogen would be made inside vehicles in tanks about the same size as today's gasoline tanks. An internal reaction in those tanks would create hydrogen from water and 350 pounds worth of special pellets. The hydrogen would then power an internal combustion engine or a fuel cell stack. "It's a simple matter to convert ordinary internal combustion engines to run on hydrogen," Woodall said. "All you have to do is replace the gasoline fuel injector with a hydrogen injector." "The egos of program managers at DOE are holding up the revolution," he told MSNBC.com. "Remember that Einstein was a patent examiner and had no funding for his 1905 miracle year," Woodall added. "He did it on his own time. If he had been a professor at a university in the U.S. today and put in a proposal to develop the theory of special relativity it would have been summarily rejected."