Ford claims twin-force will save fuel.

Derrick Kuzak, group vice president for global product development, said the technology will deliver diesel-like fuel economy. Diesels offer a 25 to 30 percent gain in fuel economy compared with gasoline engines of the same size. The first vehicle to use the technology is the upcoming Lincoln MKS flagship sedan due in 2008. Kuzak said Ford also plans what it calls its power-shift transmission, a six-speed automatic that combines features of a manual with an automatic; and variable-displacement V-8 engines.