yes and .. add to that.. years ago there was a parade on a very hot day; many, many people .. perhaps South East Asia (?).. floats in the parade included cars or trucks with large gaudy (sometimes cheap) decoration.. Someone in one of the cars did not get enough fresh air, and succombed apparently, to carbon monoxide poisoning while crawling along at a fixed rate of about 5 mp/h. The auto had some kind of auto-drive activated.. the driver passed out, but no one noticed. The crowd is still chanting and the parade continuing, but the car slowly lost direction, and slowly, unstoppably inched into the crowd. people yelled, no change, too crowded.. people were pushed into each other but at 5 mp/h slow motion.
The entire scene was so vivid from an art point of view -- the mindless mob, the auto-power of gasoline, the heat, the useless reactions.. this was in the TV news long ago.