The Arlington Sisu 1A that broke the 1000 km distance record was donated to the Smithsonian Institution and resides in the Udvar-Hazy Center (UHC) of the  National Air and Space Museum.
The Arlington Sisu 1A, having broken the 1000 km distance record, was donated to the Smithsonian Institution and is currently displayed at the Udvar-Hazy Center of the National Air and Space Museum.