I think that if they thought there was a market, and the bucks were still good, they would bring them back. But it is pretty hard to convince someone that a segment of the hobby industry that will only bring fifty or so participants to a big event, is a good market source. Compare that to a local large scale R/C airplane meet I went to, that brought almost 200 participants and over 300 aircraft.(Wish I had taken more pictures of the crowd). And when you consider that the large scale segment is pretty small compared to the entire R/C airplane hobby, that is a pretty big market. I haven't been following R/C cars, so I don't know how big their meets get.
It would be nice if the molds still existed, and Du-Bro was willing to sell them to someone like Gene. I'm sure that is a pipe dream. But it might be a boost to the hobby if someone who raced in the sixties could see an RTR like he had as a kid, just sitting in a case at a track, with a reasonable price tag. Especially if he had a son or daughter with him.