A state police officer and a motorist narrowly escaped death as a semi-truck plowed into the back of the officer's car, knocking it into a disabled vehicle.
Alexandria Stack of Fenton had no idea her quick reaction to take video of a Kentwood, Michigan man's truck driving through a median and flying over a guardrail last week would garner national attention.
A millisecond more and things would have ended a lot differently. The video which has been captured from a dash cam shows a woman trying to cross a busy road in the most carefree manner, without even noticing that an ambulance is coming right towards her.
Keep your eye on the left side of the screen.