If he indeed sold it, I'm sure a rich SoCal dude happened upon it in a Lowes parking lot or something and put a card under the wipers offering him a stink load of cash for it.
Everyone has a price. Even for something that they just made.
It's how classics / hotrods change hands all the time.
Edit- that's how my old man sold his restored red '71 2800CS back in 95.