@ Kenny
Just a small note, 'cos I love ballistics, she is photographed gobbing the gum sideways out of the left rear window, which is half rolled down.
If the seller was really smart he would have put the gum in an air-tight jar and claimed to have Britney's saliva still on it. The bid would now stand at $50,000 then.
Then again, maybe the buyer intends to make a mold of the tooth imprints on the gum, so he can manufacture 'Britney Spears Crowns'
:-)