I've seen that old "3RD" wheel before
There used to be one of those (restored and very nice) at the Harrah's auto collection in Reno Nevada. Bill Harrah collected a huge bunch of cars and had them on display in several warehouses in Reno. I remember going there as a boy in the 70's and wishing I could drive some of those beauties.
Some years after Harrah died most of the collection was sold and I'm told a small sample is on display near Harrah's casino. I don't know if that rig is still there but I always thought it was cool.
'05 30' Classic rear queen with an '11 Dodge Cummins Turbo Diesel tow vehicle
Avatar is inflight refueling of an F-15 over Nevada...best job ever!