Re: San Francisco to Seattle, eh????
having done the San Jose to Olympia WA (closer than Seattle) run quite a few times, 14 hours is average.
Unless one is peeing in a water bottle and never stopping for charge, and going up the pass, and not encountering any traffic at all around Portland, this cannot be done at legal speeds to get the "average".
I might know individuals who might have done this run in under 12 hours and they might have been on motorcycles and quite possibly have exceeded 130mph in order to get that time. But I could be totally mistaken and not actually have been involved in such a thing. Maybe it was Brian Williams who did it.