… is kind of a pain in the ass.
But wait a second, is that poor guy really wedged between those cars?
Well, not really. You see that compression effect is actually an illusion caused by the fact I’m zoomed in at 250mm (400mm equivalent). The cars are actually a good distance away from him.
Wikipedia gives a decent run-down of the telephoto distortion effect. Try it in your own photos if you want to give a shot a very crowded effect.