Johnnie:
Here's the Daimler-Chrysler Company Profile - read and learn. Daimler owns Jeep (in the event that you haven't figured it out). That may be part of the reason that a Mercedes developed CRD is being dropped in the Liberty and also planned for the Grand Cherokee. German powered Jeeps are on the way!
At least they give you the option to still read their site in English.
http://www.daimlerchrysler.com/index_e.htm