Dieter Zetsche is old school. He's so old school that when deciding on future alternatives to regular gasoline engines for DCX's American brands, they will be going with good old reliable diesel. And why not since it does so well in Europe? Well there's history over on these shores that no one really liked diesels the last time they were forced down their throats and DCX is going to address that with new ads pointing to the advances in diesel since the oil restricted 1970s. The Jeep Liberty CRD (common rail diesel) will be the first guinea pig in this test complete with scratch and sniff ads (maybe). Let's see what happens.