Garage floors aren't always as level as they look. This mechanic discovered that the hard way, and nearly had a disaster on his hands. But a superhuman rush of adrenaline and some lightning quick reactions saved the day. You can almost hear him going "oh no oh no oh no OH NO OH NO!"
In the YouTube comments, seen here. He says he'd shifted the Mustang into park to move something on the shop floor, but bad shifter bushings let it slip into neutral. "Fat Jack can run when his job is on the line," he says.
Run, and hurdle, and nail the brakes at the last possible second. We salute you, Jack. And we're betting you'll never forget the parking brake again.