Yeah, Rungis is hardly secretive. So much not so in fact that my GPS seems to take a perverse delight in directing me through there anytime the autoroute is closed for whatever reason :-/
Was using IGN map to go to Paris from Pontoise using the straight line fresh market road from Rouen...
Nearly got killed by gypsies, and false indications ...
The screenshots of roads that disappeared years ago where a carrier near Cormeilles, made a very nice irrealistic suspended road in thin air 20 meters above the ground.
Would have been fun, if in the quite abrupt slope going down on Argenteuil I did not discovered at full speed a roundabout that was not supposed to be there. It makes you wonder why we send satellites in space if we don't update the maps for decades.
Probably a remain of De Gaule plans to confuse the USSR invading us.