Jay,

The fact that you list both GA and auto fatality statistics implies
that you wish to compare them in some way. So I must ask why you would
wish to eliminate spt's from the equation, while not eliminating sdt's
(stupid driver tricks)? Surely you must realize that many auto
fatalities are the result of sdt's (eating/talking on phone/driving
with not enough sleep/drinking/etc...) - acts that you undoubtably
avoid just as you avoid spt's. Are you simply trying to comfort
yourself in the feeling that GA flying is safer than it really is?

Note - I am not discounting the higher probability of someone else's
sdt killing you while you drive, while it's likely that you would only
die from your own spt while flying.

-CK