Most people know Duncan from their Yo-Yo products which they still sell to this day but their 1981 catalog shows a company branching out into different things, mostly toy vehicles (such as 70s style vans) but also licensed items like the Batmobile.
Check out the 1981 Duncan Catalog here
Big rigs and Yo-yos. What more do you need?
Reminds me… Hot Wheels is doing a Batmobile and Batboat w/ trailer soon.
Those vans are too funny!
Batman and Robin need to catch some sun.