This an interesting phenomenon. Virtually anyone wearing this hat while driving is someone you want to avoid. They are of course mostly worn by old men who drive slowly and with a lack of confidence anyway. No surprise there. But it is fascinating that the correlation is so strong. Does the DMV actually issue these hats to drivers over the age of 65? In the 5 years or so since I noticed this, I think I saw exactly one driver wearing such a hat who was moving along at a brisk pace. So, if you see this hat in the drivers seat, make plans to get around the car ASAP. Note: most commonly seen in Buicks. Wonder if anyone else noticed this.