Check with George Barris customs. Those were both his creations.
http://www.barris.com/
He did a lot of movie work as did a few others. But for the most part
the lesser known and more common vehicles were cut up or crushed.

Signature
Steve Williams
> Does anyone know whatever happened to some of old vans of the
> late 70's customized for the movies such as "The Van", and "Corvette
> Summer"? One was called "straight-arrow" and the other was
> "Vanessa".
> Mark S.