Yes - I hope your friend makes a full recovery.
A similar thing happened when I rode the North-West Passage audax in 2007 ...
I'd read about the
dangers of the A682 between Barrowford and Gisburn and wasn't looking forward to that stretch of road. Sure enough, I saw some dodgy driving and was almost shoved off the road by a couple of way-too-close overtakers.
I stopped in Gisburn to top up my drinks bottle and a group of older cyclists pulled over next to me. One of them appeared to be having some kind of fit but in fact he was apoplectic at what had just happened to him.
A farmer towing a livestock trailer had decided to overtake the cyclists on a blind bend. A vehicle had suddenly appeared coming the other way so the farmer swerved in to the left and his trailer had side-swiped the old guy, knocking him off his bike onto the verge. Fortunately, he suffered no more than cuts and bruises, but the farmer didn't stop to establish that. He either didn't notice what he had done or he didn't want to accept responsibility for it and just drove on, leaving the cyclists to untangle the old rider from his bike.