I've done that to slow drivers camping out in the fast lane who are holding up traffic, usually when they're doing at least 10 under the limit on a multilane freeway where most traffic is doing 10 or more over the limit. This was the opposite of that though. This guy looked like he was taking an exit at the last minute way above the limit and you and the entering land Rover just happened to be in his way. Or maybe he was running from someone...