DETROIT – The new 2006 Chevrolet Impala offers a choice of three new engines including two that contain technologies to reduce gas emissions and save fuel. A new 3.5L V-6 can operate on conventional or E-85 alternative fuel by using a virtual sensor, eliminating the need for an additional physical ethanol sensor. E-85, a renewable, domestically produced alternative fuel composed of 85 percent ethanol and 15 percent gasoline, is a clean alternative to petroleum-based fuels that substantially reduces greenhouse gas emissions from automobiles. The 5.3L V-8, standard on the 2006 Impala SS, uses Displacement on Demand (DOD) technology that helps the vehicle realize fuel economy gains of up to 12 percent by seamlessly alternating between eight- and four-cylinder operation. GM was the first automaker to approve the use of 10 percent ethanol-gasoline blends in all of its vehicles more than 20 years ago. GM introduced Displacement on Demand in 2005-model year V-8-powered SUVs and by 2008, as many as 2 million cars, trucks, and SUVs on the road will feature the fuel-saving technology.