The link is to an article that describes the history of plastic combustion engines! The reason they are not in your automobile is that those who are experts don't like the idea. There are incentives in the U.S. to make cars more fuel efficient by some 5 years from now but the plastic combustal engine was made practical in 1980 or so! Literally making cars far lighter and given that they were practical since 1980, if those that had the power to shift the pardigm did so, we would be 30 years ahead in the development of plastic combustable engines! http://www.nytimes.com/2009/10/25/automobiles/25PLASTIC.html?pagewanted=all We, the common people of the earth, need to wake up to what is happening. This technology has implications that stretch from common transportation to space travel! Why are we not benefiting from something that has been practical since 1980? Something that at least our government spending in new tech and R&D should have explored.