That guy is cool as a cucumber!
After running over 20 people and crashing, I would not be that calm to look in the mirror to reverse at high speed.
You might be, if a bunch of fascists had just broken your rear window and were about to bash in your head.
https://www.youtube.com/watch?v=Weg3fP0lZmE
On the other hand, you might be dead, your head having been bashed in.