Teamilk, thank you so much!
I had not realized how many potential places he could be: landfill, squished in one of those scrap squeezer things, brush, abandoned building, it goes on and on.
But, when you so beautifully showed the cameras, I suddenly wondered if the story about the cameras being broken was not true. Maybe he either was or wasn't on them and left on his own and this just became a good "sorry, dead end" point to talk about.
Despite all the obvious places he could have been dumped by a killer, I am still leaning toward him walking away.
And honestly, if you could walk away from your kids, leaving behind a cool car isn't that big of a deal.