This moment is beyond scary for so many different reasons. How many of those trucks in that tunnel were carrying something flammable? How many cars had children as passengers?
Who knows what made this guy lose control of his vehicle, but when you see traffic coming to a halt, why are you still driving at those speeds?
Also, after losing control and having your vehicle level itself, why didn't the guy brake? You just escaped your brush with death. At that point, you're asking for something to go wrong.
I guess you should really be careful what you wish for, or you'll end up turning a traffic jam into a Michael Bay movie.
