I had a friend who had his Nova stolen a few years back. It had been his Moms since new and he used it as a driver. Almost two years after it was stolen he received a notice that it was going to auction because he never picked it up from the impound yard it had been in since the thieves left it illegally parked. He was never notified, sad that the impounders and the stolen car coppers didn't speak. It had been outside with a busted window for almost two years. He didn't bother taking it home.
I hope your truck is in better shape and the cars are found soon.