I'm glad they cleared the kid. Being overtaken from behind by a large vehicle at high speed is unnerving - nobody stares in their rear view mirror all the time, so you glance back and you see your mirror full of grille and lights . . . anybody might overreact.
I had a tank on a tractor trailer flatbed blow by me going 90+ at the bigging of the 2nd gulf war. That was a WTF moment.