To me the worst kind of driver is the inattentive one. The ones that are not paying attention because they are, texting, talking on their cell phones, eating their #2 combo, putting on mascara, etc. It doesn't matter what kind of person they are or what kind of driver, good or bad, their distracted driving will assure that you as a bike rider will not bee seen by them which is crucial to your survival on the shared roads. Other drivers are affected by these type of people too but at least that have a steel cage around them for some protection.