Go up to the rich area, Westwood or whatever, go to the cliff and watch the cities highways, in the distance its a traffic jam but watch them as they get closer. they get to a point and just disappear. So 100 yards down the way or whatever length it is, traffic jam, then its just a couple cars popping in out of thin air once in awhile.
Its weird and totally immersion breaking. I know why they have to do it. The game would slow to a crawl on amazing systems and unplayable on everything else but yikes is it jarring.