Lewis Hamilton's last drivers' championship was in 2020
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 news conference before Sunday's Las Vegas GP that focused almost entirely on Elkann's comments, Hamilton was asked whether it was fair to ask him to focus more on driving.
