Where do I start? Camera pans left so they can whizz past the impact as they can't make it look realistic. The initial impact of the two cars happens exactly by a post which allows two pieces of footage to be easily spliced, even by an amateur. The bike skids for 200 yards then suddenly stops. Look at where it is resting, it didn't hit anything, just immediately stopped. Where did the energy of being hit by 2 ton of metal going 60 mph suddenly go? Being hit by a car at that speed would send it flying. The bike appears undamaged, not even a scratch, it would be obliterated. The car rolling over again looked fake, looked like the kind of thing a toy car would do, not how 2 ton of metal acts. The car hit the post and bounced off as if there was no deformation or abrupt change in direction, no absorption of any of the car's energy at all. The pole is also unscathed. Cars don't catch on fire when they crash, they only do that in the movies. The only thing flammable is the petrol and the air to fuel ratio inside the tank is not enough to make it ignite. Even if you shot a car's petrol tank with a gun it still wouldn't ignite. The fire starts evenly under the car, there is no rational explanation for this. After being on top of a fire for mere seconds the whole thing blows up...why? It seems to be engulfed in a uniform fireball which wouldn't happen.
While it is good, there is simply no environmental alteration at all, no skid marks, no debris, the bike untouched, the post untouched...everything is as pristine as it was before as if the car and bike have been digitally manipulated into the scene.