Yesterday some nutcase was doing about 100mph when me and other cars were doing about 50, he undertook a car in the right lane who was behind me but didnt reali

Yesterday some nutcase was doing about 100mph when me and other cars were doing about 50, he undertook a car in the right lane who was behind me but didnt realise there was a car in the right lane in front of me (I was in left, UK roads so left is driving lane). All is hear is the absolute screeching of brakes, if that car didn't have ABS theres no way he'd have kept it straight, and itd have probably gone into the side of me