And if the sun wasn't shining, I'd burn an hour or two editing it.

It certainly is an interesting car, and it was fabricated by Pontiac, initially.

Pontiac did not have a perimiter frame until 1961 - so the claim that the new "Wide Track" chassis for '59 is wrong. I have not seen THIS car but it is certainly possible that it could have used a prototype of the soon to come chassis.

1959-1960 Fisher supplied sheetmetal interchanged directly across divisions out of necessity, due the the crash restyling program that began in late 1956 when the "Forward Look" Chrysler products debuted... GM had to do a three year project in less than one to make start of production. The first division with released product was Buick with their 4-door sedan, so that became the zero point for everyone else.

I think this would be a fantastic 3D project, see a lot of complex shapes and undercuts that would be very difficult to replicate in a silicone 2-part mold although it sounds as if one WAS created. There's a box of '59-60 junk under the bench well suited to experimentation for same, maybe will get to it some day. Cross your fingers for the Craftsman ElCamino, that would radically simplify the project!