one day at 70 - 75 MPH on the freeway a truck ahead of me lost some big chunks of wood. The problem was I didn't see it until another 4x4 truck I was following strattled a big chunk of wood right in the middle of the fast lane I was in. Even though I had zero warning, I braked(?) hard and whipped around the chunk of wood with no trouble at all. Not a scratch or slip of a tire.