Especially the 64/5/6 models. The slab styling was condusive to a "crush" zone. The derby guys would head on into the wall first thing and from then on they were like a battering ram. Coupled with the 413 and 440's they were concidered a unfair advantage and therefore banned from competing.
I remember seeing an imperial like that comedown to the final two cars, it and a big chevy wagon. The imperial pinned the chevy to the wall and just stood on the gas. The chevy was trapped and the imperial declared the winner.