British actor Idris Elba narrowly escaped injury after a car he was driving flipped over during filming for an upcoming TV documentary. The Mandela: Long Walk to Freedom star was in Finland shooting BBC documentary Idris Elba: King of Speed, when he overturned the vehicle he was driving on an off-road rally circuit. Elba tells Britain's The Sun newspaper, "I never want to do that again. It's the first time that I have ever rolled a car. I wasn't going fast, the car just had a mind of its own when it hit the bank. I cut the corner and then we rolled." The two-part documentary is set to air in the U.K. on 26 and 27 December (13).