I agree Carlos. The OEM DVD systems are way too expensive IMO. You can get a pretty decent hometheatre system instead for the 5200 euros the Cayenne system costs.

I use the Next Base DVD in my car with great success, and it only costs about 400 euros. And when my daughter gets old enough to start watching movies, I'll just buy another one, so that my kids have one each. And we don't get any arguments about what they are going to watch in the backseat