Yes ive seen one on the side of the road myself..... i flew home to get the van, by time i got there it had already gone.
The EX boyfriend/ partner is a very good theory... i once got a call to pick up 2 machines.. GTB SOLAR RIDE and GTB TOP SCORE.
The lady refused to take anymore than $5ea for them which she promptly gave to her 2 sons to buy lollies. LOL- husband had run off with a younger bird and stupidly left his pride and joy pinnies behind.
... a woman scorned and all that... ouchy!!