When people try to kill you do you stare at them?

On the interstate in the Ozarks. Hubs had moved into the left lane to pass a semi. Some IDIOT passed us on the right and suddenly started to move into the passing lane to pass the same semi…but we already occupied that particular part of the earth. It was like he didnt even realize we were there even though he was right beside us. Hubs slammed on the brakes and the horn and IDIOT swerved back into his lane and slowed down. As we passed him I just stared at him, trying to see what a bona-fide IDIOT looks like. He refused to look at us.