But I read in a brochure of the Porsche Cayenne, which in many model variants uses an electronically controlled lamellar clutch for the four wheel. This can be done as well as with a Haldex clutch. The rest of the technical description in the brochure can also be used as a description of a Haldex. Porsche gives a name to the child (also in the ESP etc.), but ultimately it is but the same thing, no matter what I call the child now. Corrects me, but did the technology of the lamella clutch and Haldex get the knight’s blow or did Porsche install the super duper mega Lamelle and virtually reinvent the wheel and make it even more rounded?