We've recently been introduced to McLaren's track-only P1 GTR in pictures, and now, thanks to the power of video, we can hear its uprated 986bhp hybrid powertrain in full glory.
>Read - McLaren P1 GTR preview - specifications, pictures and more
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Introduced alongside the legendary McLaren F1 GTR race car, the P1 GTR will make its public debut at the Geneva motor show in March.
