Speeding and punishment

[sweetjazz]

I think most of us -- at least those that own a car -- speed on a not too infrequent basis. I am interested in what people think about these matters:

(1) How much more punishment (if any) should a person receive for killing someone in a car accident (vehicular manslaughter) when driving 10 mph over the speed limit than driving at the speed limit?

(2) What punishment should a person receive (if any) for driving 10 mph over the speed limit?

(3) What differentiates someone who regularly speeds when driving from a common criminal (say, someone who deals drugs on a city street for a living)?