I've watched the video several times and I am amazed that the Malibu was able to penetrate the cowl of the '59, pulling down the A pillar, ejecting the door and buckling up the floor as it did. I'm not saying the test was rigged, but that huge cloud of rust dust does tell me something. The structural integrity of the '59s frame, lower cowl, rockers and floor were compromised before the impact. The Biscayne also appears to be a 6cyl, in which case the impact would have missed the motor completely. I think the results would have been quite different if the '59 had been a V8 car with a solid body & frame.
Verne