In the future, if cars run on renewable biofuels made from canes, cornstalks and grasses, you might have to thank Verenium Corporation. The Cambridge- headquartered company describes itself as a "leading developer of cellulosic ethanol technology and a pioneer in the development of high-performance specialty enzyme products which, in turn, provide access to even broader commercial biofuel opportunities." In other words, Verenium is trying to develop cutting-edge, commercially viable biofuels.