After a disappointing start to the F1 season for Lewis Hamilton who has lacked pace so far, the Mercedes driver has admitted the car is improving after clear issues in the opening four Grand Prix’s. He managed a fourth place finish in the second practice session of the Miami Grand Prix, with team mate George Russell dismantling championship leader Charles Leclerc at the top of the leaderboard. Ad/> Despite the strong showing on American soil, the seven-time world champion says he is “still struggling” with the car, but says he can see the car is improving «bit by bit».