I agree completely, Anders. It's only for long journeys that I'd like the DVD too, so I, in theory, wouldn't mind a bit of strapping, cable pulling and generic installations once in a while. But, the
most ideal for me, would be a permanent installation, with one screen, that's hidden completely. If the driver could have one screen, for say, waiting for ferries etc, that would be nice, but not a requirement.
The sun-screen-screens are indeed very nice. However, I'm a bit worried about the distraction for the driver they might give when the passenger is watching. You can't angle it in a good way... I presume. And naturally they're not completely tucked away.
If it were for the rear seat passengers then a "fitted" headrest would be the best, and then just simply use a headrest cover, to hide it in its day-to-day use.