Swiss IndyCar racer Simona de Silvestro crashed during a qualifying session at West Allis, Wisconsin on Saturday, and had to be hospitalised.
She lost control of her car on entering a turn at the Milwaukee Milie, bounced off the outside wall and skidded backwards into the inside one. She was taken to hospital with back pain, but was said to be awake and alert.
Last month she suffered an even more spectacular accident when in a practice round for the Indy 500 her car was left skidding down the track upside down and on fire. Despite suffering serious burns to the back of her hands, she was back on the track just two days later.
De Silvestro was born in Thun, near Bern, in 1988 but raised in Mont-sur-Rolle, a village near Geneva.
She started racing in Europe, and moved to the United States in 2006.