Sometimes it's the very minor details that have the most impact. At the very end of a long story on the ambiguous launch of the 2005 Jeep Grand Cherokee, Forbes writer Dan Lienert unearths this gem. "Because of the HEMI, Jeep says that the new Grand Cherokee will be the first SUV to offer cylinder deactivation during cruising and light acceleration. This will improve fuel economy by up to 20%." While I doubt the 20% number will hold up, it is an interesting feature to what already looks like a sure winner for Jeep.