Wikipedia says, that in September 2006 a DVD-edition with all "Dudu"-movies was released:
http://de.wikipedia.org/wiki/Dudu

Wikipedia is not correct. Only in the first episode it was a VW 1300 (with an M-plate from München), in the later ones it was a 1303 (with a DU-DU-plate).

btw. It's popular for VW-fans in the town of Duisburg to have a DU-DU on their Käfer. I've seen some with this combination.

Thank you so much Ingo, that's fantastic that is the one I was trying to find!
Now to find a copy...

Surely that one:

http://www.imcdb.org/movie_72361-Das-verruckteste-Auto-der-Welt.html

A bit of a long shot, but this is driving me mad..

I remember a film probably from the 70's or 80's which had two unique cars in, could anyone suggest the film title?

The first car was a 2CV which was double ended (fronts) like the cogolin but at one point in the film small wheels were flipped down behind both doors and the halves seperated and driven away from each other! I think they were red and yellow?
The other car was a beetle where all four wheels could turn and car driven out sideways from parking spaces by remote control. I think the beetle was white?

Any suggestions you could offer would be great, thanks.

Andy