Writer Cary Bates says that the Supermobile was created as a promotional tie-in for the Corgi Toys toy line: “In my opinion, whenever merchandising needs are dictating story content, the odds of any real creativity or inspiration are severely compromised”.
When I was 6, I dreamed that Superman was showing me his new car. And in the dream, as a six year old, I was thinking, “Why do you need a car?”
https://en.wikipedia.org/wiki/Supermobile
Yah, we could tell…