TIMES are hard for German prostitutes. Tough times in the S&M game, where dungeons are in short supply. This enterprising dominatrix has converted a Renault van into a dungeon, complete with dungeon features.  No longer do German masochists need to travel for humiliation. Now they can feel truly humiliated as Domina parks outside their law office, police station or other place of work. Right now, the Domina-mobile vehicle is just a van.