Okay, now imagine you're driving home after a long day at work and it is dark; you still think you will react fast enough?

Devil's Advocate: You already knew what to look for* when you watched the video. I would say that a typical driver in the same scenario certainly wouldn't have had nearly as much of three seconds between noticing and collision.

Edit: *Specifically, to be on the lookout for a black sideways truck on an unlit road directly in ahead of where the car is traveling.