London: Lewis Hamilton will fulfil the final three races of his Mercedes career as planned - starting at this weekend’s Las Vegas Grand Prix. The seven-time world champion raised doubt over his immediate future following a post-race radio message at the previous round in Brazil. But it is understood Hamilton - who is moving to Ferrari next season - has been in Mercedes’ factory preparing on the simulator as usual ahead of Saturday’s night race on the Strip. The team confirmed the 39-year-old will also address the media - as per his regular pre-race commitments - on Wednesday night in Las Vegas. Hamilton endured one of the worst performances of his glittering career in Interlagos - crossing the line in 10th. "That was a disaster of a weekend, guys,” he said on the radio. "The worst the car has ever been. Thank you for contributing to try and great job to all the guys at the pit-stop. "If this is the last time I get to perform it was a shame it wasn’t great but (I am) grateful for you.” The cryptic message led some to believe that the Hamilton was ready to call a premature end to his Mercedes career with three rounds in Las Vegas, Qatar (Dec 1) and Abu Dhabi (Dec 8) still to come. (PA Media/DPA)