Good 'ol Mr. Internet ALWAYS comes through.
It seems that Mr. Ferguson and Piaggio have joined forces to raise money for a non-for-profit called the Lollipop Theater Newtork. The LTN "brings the magic of movies, currently in theatrical release, to children confined to hospitals nationwide due to chronic and life-threatening illnesses." The Graphite Black with Tan seat LX50 isn't exactly stock as the likes of Derek Luke, Angela Bassett and Lorraine Nicholson (who?) have signed it.
The actual auction starts on Monday, March 19th, but you apparently have to pre-qualify and opening bids start at $3000.