While it would infuriate an inpatient passenger, they are likely less of a threat to the road (although - still a threat) than a reckless #2.
Not necessarily. Situational awareness is paramount, and up to a point that doesn't have much to do with speed. A professional driver can drive safely in a manner that most people would regard as reckless - simply b/c he is more skilled.
I would much rather ride with someone who dodges and weaves 10mph faster than surrounding traffic and knows where everyone is, than with someone cruising serenely at the posted limit who doesn't check his mirrors unless he has to.