That's some really nice clips you've put together.One of my favorites was the 1972-75 game show Split/Second,produced by the the same who did LMAD.
Three contestants answered questions at split second speed.At the end of the show,the largest daily points winner had a chance at owning one of 7 new vehicles,revealed behind the back drop.
They had to walk around and open the door to start the ignition key on one car of their choice.If it started,they won it!..if not,they came back the next day to try to be the big points winner again,and if they were they would exclude that previous vehicle,knowing full well it wasn't going to start.
As long as the same winner kept coming back,they would narrow down the field of cars more each day.