The article indicates that the family (they didn't even know he owned the car) has retained possession, and one of the large auction houses will be handling the sale next month. I don't know what the auction fee is, but it must be 20%, anyway.
I saw Harrah's collection in Reno before it was broken up and sold. No Bugatti there, but a Darracq and a DeLahaye. The amount of detail in such cars is numbing.