The Polish driver Robert Kubica will test a Mercedes DTM touring car in Spain this week but any Formula One return remains a long way off as he continues his rehabilitation from a near-fatal rally accident.
The new Mercedes motorsport head Toto Wolff says the former BMW-Sauber and Renault driver will be testing with the HWA team at the Valencia circuit.
Wolff says Kubica is not yet 100 percent fit and has not driven a car with such downforce since he suffered severe arm and hand injuries while competing in a minor rally in Italy in February 2011.
Asked whether Mercedes might give him a run in a Formula One car if the test was successful, the Austrian says it's not on the horizon but is something everyone would love to see in the future.
Kubica, Poland's first and only Formula One racer who was a grand prix winner with BMW-Sauber in 2008, was considered a champion of the future before he had his accident.
The Pole has competed in and won minor rallies as part of his rehabilitation and said last September that he was still hoping to return to Formula One eventually.