 Complete the following phrase:  For the 1954 Spanish Grand Prix Rosier entered the new Maserati 250F, and finished in seventh position. In Rosier returned to entering only a single car for himself. He retired in Monaco and finished ninth in both Belgium and the Netherlands. For Rosier again entered the Maserati. He started the season with a retirement at Monaco before finishing eighth in Belgium and sixth in France. After starting twenty-seventh in Britain, Rosier retired on lap twenty-three when his electrics failed. The 