Wow, thats really sad too see , but as long as the occupants come out unhurt, everything is OK!

This is one of my biggest fears since I do lots of highspeed highway driving, I have encountered objects before too but with less damage. The best thing if at high speed is not to try to avoid them and hang on, unless you can really trust you can avoid it, otherwise you may loose control of the car in the attempt and the accident be much more severe, and happens frecuently. You did the right thing.

Hope for a speedy recovery of your 997 and back on the road!