40' Airstream coming to auction, it's a pair of 20 footers stitched together

Believed to be 1 of 5 in public possession
 Mounted onto 50 foot flatcar for railroad service
 Dismounted from flatcar in 1989
 Restored by Timeless Travel Trailers

https://www.mecum.com/lot-detail/DN0615-215789/0/1962-Western-Pacific-40-Airstream/