The Streamliner Case - Recreating the Mercedes 540K The resurrection of the 540K Streamliner – New life breathed into an automotive legend. They are world-renown, much sought after, and idolized by car fans. We are talking about the Mercedes-Benz 540K. Built in 1938, the unique prototype Streamliner marks a milestone in aerodynamics. With streamlined angled radiators and a flat driver\'s cab, it was far ahead of its time. Now Mercedes-Benz Classic has decided to resurrect the rare vehicle.