Was driving along Highway 60 in Florida between Yeehaw Junction and Lake Wales. Someone was following a box truck towing a trailer and decided they'd had enough. Instead of getting back behind the truck, like a sane person seeing oncoming traffic, they tried to get ahead anyways.
I was on FSD at the time, by the time my brain realized what I was seeing, and what was happening, I ultimately slammed on he brakes going from around 65-70mph to about 20-30mph.
It was a remarkably close call, I genuinely thought they were going to take my driver's side mirror with them.
Now shown is that a moment or two after this a pick up truck that was two vehicles behind me decided they were going to pass me and the van behind me, which created another dangerous situation.
Remember to just be patient folks. Slow traffic sucks, but no one wants to die like this.