Check your rear-view mirror often...even when it might seem unnecessary..

While driving through the mountainous part of Montana once *I* was in a long line of vehicles crossing a valley which had a road laid on top of a cut-and-fill inverted "V". About a mile and a half of two-lane road with nothing but steep slope on either side. Most cars were about 2 car lengths apart, but I had allowed maybe 3. We were all going maybe 50MPH.
   I just 'happened' to glance in the left side mirror and was startled to see a car pull out about 15-20 cars back and begin to PASS everyone at maybe 75-80!! I looked up and saw cars approaching in the oncoming lane!! With maybe 3 seconds to spare, the daredevil cut into that small space right in front of me, waited until the 4-5 oncoming cars passed, then shot out again, passing the perhaps 10-12 cars in front of me...and disappeared in the distance.
   Had I been following as close as most, I shudder to think what would have happened. He had no way of knowing when he started his run that there was any space to pull in.....

Since then, I always assume there 'might' be some crazy hot-shot behind me, and I do NOT assume what they will or will not try!