When Saab debuted the 9-X BioHybrid concept at the recent Geneva Motor Show, aerodynamics was a big part of the equation. The compact 9-X has a smooth, rounded nose, a raked back wrap-around windshield and a downward sloping roof. To help reduce the drag at the back end of the short body, a spoiler that wraps around the roof extends backward up to four inches. A new video featuring some of the designers talking about the aero work that they did has just been posted on the GMnext web site. You can check out the video after the jump.