Lewis Hamilton has stated that he has no desire to compete in any other racing format once his Formula One career is over.
The Mercedes driver has instead dropped a hint towards “exciting” plans off the track.
The three-time World Champion’s contract at Mercedes expires at the end of next season, and that has led to speculation surrounding his future.
He started karting at the age of eight and is approaching the end of his 11th Formula 1 season.
Hamilton, at the age of 32, is currently the fourth-oldest driver in the series behind Felipe Massa, Kimi Raikkonen, and Fernando Alonso.
Hamilton claimed: "I don't have any desires to do any other racing.
“By the time l stop it could be 30 years. Everything else is a step down the ladder.
"There is no other racing series that l have any desire to drive – which is a shame.
"I wish l had more passion to do an Indy Car or a Le Mans. But there is zero, there is nothing. I have more exciting things outside which l am passionate about.
"I've always respected [Indy 500] and appreciated it and I got to watch part of it when Fernando did it, which was super exciting. I love the idea of drivers being able to do more than one series.
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"I have a huge amount of respect for those drivers; it's quite scary when you approach those banks at the speed that they do. Obviously I get lots of opportunities to do those things but I have no plans to go there and do anything serious."
Several of Hamilton’s peers have taken a different approach.
Most notably, recent examples include Alonso, who competed in this year’s Indy 500, whilst Raikkonen was absent from F1 to focus on rallying and NASCAR.
Mercedes expect Hamilton to extend his contract at the end of this season.
Hamilton remains eager to eclipse Michael Schumacher’s all-time win record, but has started to think about his career post-Formula One.
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"My whole life has been motor racing so it's difficult to imagine it being out of my life I'll obviously have more time to watch," he added.
"I probably will attend more GP races, and attend more sports that l admire – like NBA, for example.
"But in terms of racing, l don't think l will do any racing.
"I think there are a lot of positive things happening in my life," he said at the US GP. "There are a lot of interesting things forecast over these next 18 months, so I guess that's an exciting and uplifting thing.
"I'm arriving at these races, generally, with an abundance of positivity; it helps keeps your mind in the right place."