Actually, Bob,
The '69 Dodge Charger Daytona was not a planned collectable. It was built and sold to homoglate the aerodynamic aids on the car for NASCAR use.
I understand that they were unpopular with the public and some went unsold for quite some time - as late as 1974! Can you imagine a new car sitting on a dealer's lot for 5 years? Vicki's Cobra R was 1-1/2 years old when she and her husband bought it recently, but 5 years?
I can remember a few Daytona's and Superbirds in our area when I was a kid in the early 70's, even had a neighbor with a '70 Superbird, but nobody thought they were collectables.