Reminds me of one time I was driving down the highway, and a stick of pulp wood, maybe 4" dia x 4 ft long, fell off the truck in front of me. I didn't have time to avoid it, so I ran over it...helluva sound as I ran over it (company car, no damage to the suspension)...when I looked in the mirror, it was bouncing end over end....wouldn't that do some damage if you nailed it at 100 km/h....