1954 Mercury XM 800 Concept for sale on eBay

It may not be tip-top condition, but this one-of-a-kind 1954 Mercury XM 800 Concept that we found for sale on eBay is definitely a piece worth working on. Designed by John Najjar who was also responsible for the 1962 Mustang I Concept, the XM800 coupe prototype made its public debut at the 1954 Chicago Auto Show. The XM 800 then traveled the US auto show circuit through out the 1954 season.