For one thing sure, i HAVE seen O.J. and Warrior ERTL Models before on YT back in '07 in their original packaging. It looked like it been taken from some sort of Catalogue back in '89 or '90. No joke.
It didn't say which models had prototypes, and I HIGHLY doubt that any models have been seen on YT before, at least pictures of them would still exist. And they were never released so quit arguing with me CGIFan.