I have a problem with all the emphasis on this perpetrator's age. Over that past few months I've been in several states. In all of them I've seen drivers being aggressive toward other drivers. In all of them I have witnessed behaviour that could only be described as deliberately trying to cause a collision. In all of them I have seen people who, by their behaviour, drove as though they just didn't care about anyone else on the road, whether in another vehicle or on a bike.
These drivers appeared to range from their early 20's to very old.
My last personal bike-car conflict that was caused by the car was in Highlands Ranch and the driver was female and appeared in her early 30's.