Interesting "bit" story in the NYT magazine section this past weekend. Short story, shorter. A biker who rides in NYC did a limited study with sensors on his bike that showed cagers actually got physically closer to him when he rode with a helmet. He actually got into two "mishaps" when wearing a helmet. His ultimate theory was that motorists(subconciously) believe(right or wrong) that bikers with helmets are more experienced than those without, therefore they would get closer to biker. The biker who did the study did not personally endorse helmet use.