For someone who reckons he isn't tired, Lewis Hamilton has been pretty cranky ahead of Sunday's Australian Grand Prix in Melbourne.
First, the four-time world champion took aim at the media for daring to ask whether he was up for his title defence after cutting a lethargic figure at Albert Park on Thursday.
But the jet-lagged Briton saved his biggest swipe for Formula One itself after the press conference, slamming the sport on social media for not embracing diversity.
"There is barely any diversity in Formula One," Hamilton posted on Instagram.
"Still nothing's changed in 11 years I've been here.
"Kids, people, there are so many jobs in this sport in which anybody, no matter their ethnicity or background, can make it and fit in. #diversity #ucandoit."
Hamilton, 33, appeared set for a sluggish season start after posting his battles with jet lag on social media ahead of the 58-lap season opener on Sunday.
Former McLaren driver David Coulthard had even suggested Hamilton may retire at season's end due to a lack of desire.
"I believe that you don't lose the speed, you lose the need," Coulthard told Express Sport.
"As sure as Lewis Hamilton is one of the best drivers in Formula One today, he will stop.
"The question is whether it will be this year or another three, four or five years.
"I think it will be the mental tiredness of doing the same thing again - walking the track on a Thursday, the same press conference, the same questions."
Hamilton dismissed the theory, bristling when a reporter asked if he was "jaded" before the Australian Grand Prix.
"I'm definitely not tired - this is the 12th season of doing the press conference," he said.
"I'm not the most excited about this section of the season and the race weekend but I'm looking forward to getting in the car."
Asked if he was still "up for the fight" in 2018, Hamilton said: "Of course".
Hamilton is this year hoping to become the third driver in F1 history to claim five world titles.
In a sign Hamilton is not leaving any time soon, Britain's highest-paid sportsman is expected to soon announce a new three-year Mercedes deal worth a staggering $73 million a season.
Asked if he had reached his peak, Hamilton said on Thursday: "I hope not.
"I am sure there is a peak level for a driver when their fitness level gets harder to reach and their interest starts to decline and their driving starts to decline.
"But I definitely don't feel like that.
"It is a privilege to race in F1, to be racing for this team, the heritage that it has."
