Lewis Hamilton has confessed to harbouring thoughts about a switch to Ferrari – but concedes he is happy to remain with Mercedes. The seven-time World Champion’s current contract with Mercedes runs out at the end of this year and speculation has persisted that he might choose to walk away from the sport amid the Silver Arrows’ struggles. \u201cI\u2019m not at the end of my career, I\u2019m not in the downhill slope of my career