Photos: Green is the theme at Detroit auto show

Ford Motor is expected to use the Detroit auto show to introduce new engine technology called EcoBoost. It modifies an internal combustion engine with a turbo charger and direct injection. The result is up to 20 percent better fuel economy, 15 percent fewer carbon dioxide emissions, and better torque. Ford plans on using the technology in mid-size sedans in 2009.

Photo by Ford Motor