I am a bit skeptical. None of those guys seems to have impaired vision or are touching their face, I would think that their eyes would feel on fire. I would be surprised that the gas would shoot out so far from the end of the nozzle. Really 3 or 4 guys driving around in a van and jumping out like commandos to steal one guys wallet
Doubt it was for just the wallet. Probably the car too. Even though, sometime the blitzkrieg style attack normally will stop the target from fighting back, so it probably is normally very successful.