Man's surprise find on car while refuelling shared on TikTok

A man has revealed a surprise find on his car he discovered while refuelling.

American driver, Justin, from Indiana, posted on TikTok a video titled, "How did I not know this."

He showed how he only just his realised his car has a handy slot to hold the fuel cap, when it's opened to refuel.

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"38 years on this earth and I just learned this," he wrote.

Thousands of followers were also stunned by his find.

One, named Andrew, immediately went to look at his own car, writing, "I'll be back in a second I just have to check something."

Jamie also was surprised, and said, "51 years on this earth and I just learned this."

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However, some claimed they already know.

"I'm a blonde woman and I knew this," wrote Rika.

Others pointed out that many new cars don't have a cap, and it's more a feature of older models.

The video has been watched more than a million times.