Little bastards. Someone did this to my Dad, who was in his late 70’s at the time. He handled it very well, stayed calm, got to the side of the road.
He wasn’t hurt, but getting your windshield smashed at high speeds is extremely dangerous.
Years ago on I-94 I was with a buddy in his truck driving thru Detroit when I saw a kid on the overpass throw a brick or something and it hit the vehicle behind us.........That was before they enclosed the overpasses.