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Companies are tinkering with the trusty old internal combustion engine design to boost fuel economy. Scuderi Group says its split-cycle design and air hybrid improves MPG by more than 50 percent.
Hybrid engines aren't the only way to improve fuel efficiency. Scuderi Group unveiled a cutaway of its Scuderi Split-Cycle Engine prototype at the Society of Automotive Engineers (SAE) 2009 World Congress in Detroit.