Retrofuture Volkswagen prototype was designed by Mikhail Smolyanov / Solifuge Design, and he’s got a similar VW Bugsled in black. Since there are no images of modications in progress, I assume that the version above was never built.
HOWEVER, there is this:
Similar design, yet not the same. Image searches for this work in progress produced no matches.
[Top & bottom images found here. Not quite Rat Rods, but I stuck them in The Archive anyway.]