These are interesting. Roger Penske was getting ready to shock the NASCAR world in '73, but he needed to test to make sure....so he entered a '72 AMC "flying brick" to be driven by Dave Marcis in a couple of 1972 races. The car gave up over 40 cubic inches to the competition and was not in anyway as aerodynamic as the Mopars or even the Fords. Still it finished 5th in it's first outing...