I think I remember that set, Mal. I think a Shell subsidiary produced it, and Shell marketed it through it's gas stations, if I remember correctly, though that was a long time ago. ARCO (Atlantic Richfield) also marketed a plastic toy set, Noah's Ark, which featured Noah and his wife; pairs of animals; and the Ark itself. Every week, a different piece of the set was offered at ARCO stations, so kids had to pester Mom and Dad to go there and tank up. And to get the Ark, you sent in proofs of purchase or something similar, and they sent you the boat. All of it was made of a soft plastic, similar to what Airfix uses for its 1/32 and 1/72 figures.
It makes sense for a petroleum company to produce something like this, I think.
On the other hand, Sunoco issued aluminum coins depicting classic cars, which you could collect and put in the little coin album they provided. Maybe they owned aluminum mines...
Now I'm getting nostalgic for the days when the oil companies offered things like this. I had a Sinclair dinosaur, too.
Prost!
Brad