[carmine]

The video footage I saw shows no burnout only cobra driving by in a controlled manner and spectator jumping onto roadway making some sort of gesture at the cobra and cobra swerving and possibly braking to avoid spectator. Spectator then walks away from accident seen while looking over his shoulder at others walking towards the crash.
In my view the swerving and braking at the same time would have been enough to break the rear end loose on these cars.