Huh? That Kaiser, Willys, AMC, etc. stuff is all ancient history. Patents only last 20 years. Maybe if they've come up with some new patentable stuff since 1996, sure, but anything older than that is public domain now. And I have a hard time believing anything really all that new and valuable has been done with 4WD since 1996. AWD is a different story; there's been a lot of advances there, but that hasn't been with Jeep, that's been with the Japanese and Euros, especially Subaru. Mazda's even got some new on-demand AWD system in their CUVs which they claim doesn't even have a fuel economy impact, aside from the added weight of the system.