Lewis Hamilton has defended his work ethic following criticism from Ferrari chairman John Elkann, saying he wakes up thinking about driving. The seven-time champion and team-mate Charles Leclerc were told to "focus on driving and talk less" by Elkann after Ferrari suffered a double retirement at last weekend's Sao Paulo Grand Prix. It left Ferrari fourth in the constructors' championship - 36 points behind Mercedes and four adrift of Red Bull with three grands prix and a sprint remaining. In a