I finally got a chance to watch the video again, and discovered that the Pontiac was a '69 Bonneville, instead of a '59.
Doesn't change what happened any, but just thought I'd better make the correction anyhow.
Also, here's a link to the video, where Bubba tells about his dad and the wrecked Vette at Hallsville.
http://www.kcm.org/watch/event/2015-...ll&speaker=All