not a working video, despite the arrow in center
I'm not sure, but this might be the car as first built by Sox & Martin.
I remember a summer vacation when I was about 11-12 in the early 70’s in Lancaster, PA.
We stayed at the local Quality Court Motor Inn. In comes an Dodge angle bed car carrier with a Sox and Martin drag car on it. I think it was a ‘Cuda. I still have the pictures dad snapped of me standing next to it. He had to practically pry me away from it afterward. LOL
Have to dig out those pictures now.