A trail of gasoline appears to be trailing behind the exclusive supercar as it sits and burns.

The McLaren P1 is now a bit rarer after one example was completely destroyed by fire outside London.A video shot by a passing motorist and posted to Instagram shows the hybrid supercar beginning to burn.

A trail of gasoline appears to follow behind the car, hinting at a fuel leak, though the circumstances of the accident remain unclear.

"We believe it's an isolated incident," the company told The Sun.

The flagship Ultimate Series hybrid has been subject to just one recall, an apparently unrelated issue that could allow the front hood to fly open if the primary latch is not properly secured.

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