[TigersEye]

How fast do you estimate his speed was at impact?

[freeandfreezing]

The best way to determine the velocity of the automobile is to measure the distance it moves in successive video frames, reconstructing the geometry based on the viewpoint.

The final collision, after the collisions with the people in the street is at a fairly low speed, perhaps under 20 mph. I don't have time at the moment to start analyzing videos.

If you want to see what a 40 mph collision looks like watch some crash test videos.