He may have just never spent any of it. Presuming he's still alive, there might be a duffel-bag full of very well-known serial-numbered bills buried behind his

He may have just never spent any of it. Presuming he's still alive, there might be a duffel-bag full of very well-known serial-numbered bills buried behind his house, with a last will and testament saying "I did it, go dig up the money now, haha, I got away with it". Sounds crazy, right? But then you remember this guy hijacked a plane and then jumped out of it and maybe crazy is exactly right.