In the next few weeks, Gm will be testing a new grill for their truck line that will feature a motorized grill hoping this feature will improve fuel economy. The slats in the grill would open or closed depending on conditions such as temperature, humidity, and the speed of the vehicle. Sensors would monitor these conditions and determine whether or not to open or close the slats. Wind tunnel testing is supposed to commence shortly to see if this new addition will have a significant impact.