That's about what I would have expected from the knuckles at Holden Customer Service.
Nothing that they said is untrue, but none is very accurate either.

The Orange Van was owned and built by John Evans who is pretty much the grandfather of Vanning in Australia. He owns a business called Race Paint and was the painter of the MAMBO SANDMAN.
Back in the early 1970's John built a HQ Van known as "Tangerine Dream". Later he would start a business called Vanmakers later Vancraft Plastics.

John was inducted into Majestic Vanners Legends Hall Of Fame last weekend. Without John's influence the Van scene of the 1970's would have been a lot different (if at all!).

Regards, Smooth