A leaked letter from Jim Farley - the CEO of Ford - to Red Bull a week ago seemed to put a lot of pressure on the relationship between the car manufacturer and the energy drink company. In the letter, the American wrote that he was unhappy with the way Red Bull allowed the Christian Horner affair to simmer down as well as the lack of transparency shown to Ford. Meanwhile, rumours are circulating - especially in German media - that Ford wants to dissolve the contract with Red Bull Racing. Is the partnership already on the verge of breaking down?