So on Vimeo I found this 2004-dated live test for Johnny Bravo that maybe was an experiment for JBVO that they didn't go with, though it's 2004 era so maybe it was after JBVO's run?
Also within the reel of Marc Silk is some UK Johnny Bravo advert. Researching into this with the familiar tiger print chair and secret formula, I found out it was a Kellogg's Cartoon Network campaign,with potentially an advert for Rice Krispies and The Powerpuff Girls as well. Anyone have these ads?
My gut feeling though, is that when the guy said "test" in the description, he means it's something he made himself.
The model is so poorly made and the guy lists off which software was use to create it, I don't think that's something Cartoon Network would have put together.
But again, that's just my gut.
Since it's dated 2004, one could make a point that CN attempted to revive JBVO after its original incarnation was canceled, and by using CGI maybe they thought it would have been more marketable.
It's very interesting, but I'm not quite sure what to make of it.