The US Army TACOM's National Automotive Center (NAC, Warren, MI) will demonstrate working fuel cells during a special exhibit being held August 4 to 9, 2002, at Traverse City's Dennos Museum Center. The exhibit includes fuel cell power generators from Millennium Cell Inc. (Eatontown, NJ) and Delphi. In addition, the NAC exhibit for auto industry executives beginning August 5, 2002, features a collaborative tool developed by PTC (Needham, MA), which allows highly accurate visualization of new vehicle designs.