LeftLaneNews has posted an article about BP developing a potential replacement for ethanol.
BP and DuPont on Tuesday announced what some are calling a breakthrough in biofuels. The new product, biobutanol, produces more energy than ethanol and can be used in vehicles more easily without modification to engines.
If this makes it to the mass market, this sounds very promising. The fact that it is more pure than ethanol and is renewable is awesome. It is also nice to know that most current vehicles will run on biobutanol without modification.