There were some tests that they did for Jeeps and trucks that were "confidential" and we were not allowed to talk about in public... The winter cold testing was insane!!!! (but I can't talk about that...)
They worked hard to protect the Jeep name and make sure it was one of the best 4x4's on the market... That was one of the fun parts of working on the Jeeps and trucks vs the car and minivan platforms... We got to do some fun stuff off road that they didn't....