SoCal driving

Few days ago, Michelle was talking about the things that don't suck about driving in Southern California. Needless to say, it was a short little list. But she mentioned that one of the things that works really well down here : the zipper. And I have to agree, people down here do apply the zipper thing when merging during busy traffic (road work for example)
And I have a theory of why. I think that many people have gotten into low speed collisions. Two lanes are merging, neither driver will let the other go first and at 5 mph, the two cars crash. This will have undoubtably happened very often. So with all their road rage, the zipper is the only time that drivers can show off their zen like moves of civility before honking their horns and flipping off other cars because traffic is going so slow.