In the mid-80s director Worth Keeter made several 3-D movies for producer Earl Owensby and many of them have become very hard to find(one of them-Chain Gang only recently turned up on Cinemageddon)there's still at least two missing that I know of-Hit the Road Running and Hot Heir(which would inspire an annual balloon race like the one in the film)according to the one lone review for the former in 2007 it was being sold on Earl Owensby's official website but it's unfortunately no longer active.
Looked some more into this and it appears that "Hit The Road Running" actually did get home video releases in some countries overseas and was once sold on Earl Owensby's official website(which has been down since 2021). Fortunately someone on Cinemageddon managed to snag a copy from the site before it went defunct so i'll be sure to grab a copy from there and put it on IA.
Hopefully Hot Heir will turn up one of these days.