In this video BMW executives delve into the inner workings of the company's Efficient Dynamics technology, also known as Blue Performance, as the automaker endeavors to extend its clean diesel vehicles to the U.S. market. Focusing primarily on the upcoming 2009 335d and X5 diesel models, top BMW insiders explain how the company addressed two of the greatest challenges associated with diesel-driven propulsion -- the emission of harmful particulates and smog building Nitric Oxides (NOx). Tom Bologa, BMW's VP of Engineering, and other top execs also answer a lighting round of questions on topics ranging from the U.S. demand for diesel-powered cars to the company's future in hybrid and hydrogen propulsion systems. Check out the video for more.