Unlike many of the concept cars we see at auto shows that are dummied up with clay, smoke and mirrors, Rolls Royce has always pursued an entirely different philosophy, building fully functioning “experimental vehicles.” Each such car is meticulously hand-built to investigate how the potential production model will operate in real world conditions. The first such vehicle (1EX) was constructed in 1919, predating the 1938 Buick Y-Job (often claimed to be the world’s first concept car) by almost two decades. The “Torpedo” styled 10EX was built in 1926 as a sports car version of the Phantom 1 and after many modifications, lapped Brooklands at an average speed of 91.2 mph. Most importantly, it stayed in the company as a staff car and occasional celebrity courtesy car for six years, being driven by many people of note, such as Lawrence of Arabia who once borrowed it for a European trip. Apart from being exquisitely beautiful, 10EX was one of the world’s first concept cars, has a splendorous and meticulously documented provenance, and … it’s for sale.