Nico Rosberg set the pace in the first practice session for the Canadian Grand Prix.
But he had to abandon his final run in the session when he began to experience burning in the car.
Other drivers found the circuit a considerable challenge as the little-used track proved very dusty. The slippery surface caught out several drivers – including the world champion.
Sebastian Vettel lost the rear of his car at the final chicane and slithered helplessly into the wall, smashing the front-right corner of the car. The Wall of Champions claimed another victim.
Many other drivers went off the track during the session including Nick Heidfeld, who pirouetted on his way out of the Senna hairpin.
Paul di Resta locked his brakes at the L’Epingle hairpin and took to the run-off there.
The Ferraris led the way early on, with Fernando Alonso heading the times for much of the second half of the session.
Lewis Hamilton had been quickest up to that point but suffered a technical problem relating to the steering wheel which confined him to the garage halfway through the session.
He was able to join the track later in the session. Team mate Jenson Button also hit trouble with a faulty Drag Reduction System.
Michael Schumacher ended the session third fastest ahead of Felipe Massa and the two McLarens.
2011 Canadian Grand Prix
- Technical review: 2011 Canadian Grand Prix
- 2011 Canadian Grand Prix: complete race weekend review
- Vote for your Canadian GP driver of the weekend
- McLaren: Button makes amends for collision with stunning win
- Red Bull: Vettel finally cracks under pressure
- Ferrari: Alonso rues ‘bad luck’ after retiring
- Mercedes: Schumacher misses out on podium
- Sauber: Kobayashi slips from second to seventh
- Renault: Heidfeld crash leaves Petrov fifth
- Williams: Barrichello in points, Maldonado crashes