He was eventually acquitted - after two mistrials - but his career was never the same again, and he was forced to sell his beloved custom-made 1919 Pierce-Arrow Model 66 A-4 Tourer.
Even without the back story, it's a beautiful car - as you can see in a photo in the New York Times.
But in the same auction last week that saw the original Batmobile fetch $4.62 million, the Fat-mobile got no bids at all.
Jennifer Rosenberg, About.com's guide to 20th Century American History, has a fascinating look back at the rise and fall of Fatty Arbuckle.
And if you're in the market for a classic car, I know where you might be able to get one on the cheap.