The long slung, open-air Mercedes you see below sports quite a provenance: The body was designed by Ferdinand Porsche (26/120/180 Type S). It features a supercharged 6.8-liter inline-six paired with a four-speed manual transmission.
The Type S cars were introduced in 1927 and participated in races across Europe, including a 680 S that won the inaugural race at the Nürburgring in June 1927.
Just 146 examples of the 26/120/180 Type S were produced, making them especially rare.
Source: Bring A Trailer