The new BMW Z4 sDrive 28i Roadster, left and the new ActiveE BMW on display at a news conference in New York on Monday, April 18, 2011. The new BMW Z4 sDrive28i Roadster will be the first model in the U.S. to feature the company's new powerful, efficient and clean TwinPower Turbo 4-cylinder engine. It also marks the return of BMW 4 cylinder power to the United States for the first time in over a decade. Based on the 1 Series Coupe, the BMW ActiveE, a full electric vehicle with typical BMW performance, and it will incorporate specially-designed lithium ion batteries which allow for a range of around 100 miles in everyday driving. (Jim Sulley/newscast)