Good link.

Yeah, you cannot under any circumstances (other then if one or better, 2 legs of his is shot out) outrun a griz of black bear - unless it wants you to, as in just scaring you off without intent to kill and/or eat you.

We "clocked" a black bear boar or sow in Northern Ontario with a school buss (Jr. Forest Rangers) at 35 miles per hour for just over 2 miles. She was running on the asphalt in front of us, before leaving the road to the right and we could it breaking off aspen as it ran through the bush beside the road.
It did not seem to slow down running through those little trees. The bus driver (German/Ojibwa) hated bears and as the bear was turning off the road, he hit the horn and held it for a few seconds. The bear seemed to speed up.