Ah! A half-sized gasoline engine and that too performs like its full-sized counterpart! Not just that! MIT researchers are developing it, which also offers fuel efficiency as that of todays hybrid engine system! The little engine also comes at a far lower cost. The factors that imbibed these characters in the amazing engine are carefully controlled injection of ethanol directly into the cylinders of the engine when it has either to climb a hill or pass a car. This engine can go as much as 30 percent farther on a gallon of fuel compared to an ordinary engine! » original news (via-hugg.com)