Aggervating there is something on the bed but as I enlarge it cannot be read. Auctioneer said he did nto remember the name of it. Auction is tomorrow..guess I'll know then.
I suspect it's a Cushman Truckster that may have been modified to resemble a jeep. I found a few photos of similar looking rigs. Cushman made hundreds of models, so it's possible it's original.
Every about thing about your image screams Cushman, starting with the seat.