Jenson Button has donated £15,000 to a Formula 4 crash victim who has had both legs amputated.
Billy Monger, 17, drove at high speed into the back of a stopped car on Sunday, 16 April, during a race at Donington Park.
More than £500,000 had been raised on a crowdfunding page for the British driver by Thursday, 20 April.
Monger was stuck in his car for 90 minutes after the crash, before being airlifted from the Leicestershire track to hospital.