I wonder whether Toulouse has laws against using your smartphone while driving -- this could be a nice income source for the municipality as well, staking out the parking spots with hidden cameras!
I saw this played at the University of Wisconsin in 1970 - Paul Purdom was on one side, but I forget the other player - maybe Ralph London? It was called Go-spiel (by analogy with Kriegspiel), and required a referee to tell the players whether their proposed move was legal, using his master board between the two players with screens to keep them from seeing the other boards.
The one game I saw played didn't have nearly the depth and interest of Kriegspiel, which I played and refereed often in the years before that at the RAND Corporation. Perhaps 9x9 Go-spiel would have worked out better.
I confess I watched the one with Paris Hilton washing a car in her bikini several times. I forget what kind of hamburger it was advertising, though.
Business is a good game -- lots of competition and minimum of rules. You keep score with money. -- Nolan Bushnell, founder of Atari