Are our Slants "Unsafe"?

Give me bigger and heavier any day! My 75 LeSabre was rear ended by a Nipmobile who was hit by a 1992 Buick. Nipmobile was totaled, 92 Buick front clip was on the street and only my rear bumper was damaged. Oh, and I was stopped at a light. My 67 Buick Skylark was rear ended by another Nipmobile. My car sustained heavy frame damage due to rust. I heard a thump, car didn't move, I was stopped. The car that hit me was bouncing off of my Buick as I looked in my rear view mirror.
Old school for me!