Look at these photos:
http://www.photos-depot.com/photo-jpg-17519.htm
http://www.photos-depot.com/photo-jpg-17520.htm
It is a Plein Air, used as a rental car from a hotel on Rhodes island.
I had been told at some time that some "jeep-like R4s" had been in circulation on Rhodes in the 70s-80s. They must had been Plein Airs and not JP4s.
At first glance it looks correct (shape of the sides' cut, windscreen cut and fittings, hood shape).
But many parts are missing like the long waistline trim pieces, sill stripes and aluminum trim over the sides.
What really made me wonder was, when I entered the number plate in an older car database that used to be available here, it is registered as a 1972 R6!
The badge on the lower right corner of the grille is the trademark of Saracakis Bros. (Renault importers in Greece until 1977). They normally put such large badges on buses they built in their coachbuilding department. So this one could be a converted R4 body (with the original kits available in the 70s) on an R6 chassis.
However, this one:
http://www.youtube.com/watch?v=pO2i52fxULQ (also on Rhodes island) looks very correct (long waistline trims, all six pieces of aluminum trim over the sides, Parisienne style hubcaps), but it is bordeaux red with beige hood (no evidence of such Plein Airs being available at the time). I managed to find the movie and watch it, and there is a second "clone" of this one parked besides it, also in bordeaux red with beige hood.