I think most of us have made at least one "questionable" decision while riding. I myself have had a similar experience riding alone down to wooster to meet up with some people. Like in your situation, there was a line of 3+ cars, on 83 south in my case. Found a straight that I thought was long enough and clear enough to make a clean pass. Did not anticipate the person in front of the conga line see me and then hammer on the gas as I was attempting to pass. Obviously that made it take longer for me to pass, as a dump truck was coming the opposite direction. I cut that car off pretty hard and felt the wind gust from the truck as it wiz'd by. I estimate by only a few feet.
I don't blame the car, I blame myself for thinking not knowing I had enough time.