As an expert in automotive mechanics, I can attest that this type of thing simply does not happen, especially in a brand new Merc. Engines just don't fly out of cars, much less skid 100 feet. Cars are specifically designed to keep that from happening in collisions. I have looked at the tree, it is damaged, but the damage is consistent with an impact and a fire, not the type of impact that would catapult an engine. 150mph crashes don't launch engines. I think there was a bomb in the car. I really do.
seriously, how does an engine and transmission fly forward 100ft in a head on collision with a large tree?