Formula 1 driver Timo Glock will have to miss the Brazilian Grand Prix after tests found he's cracked a vertebra in his back.
The Toyota driver injured himself in a high-speed crash during qualifying for the Japanese Grand Prix on 4 October.
He didn't race the next day, but it was thought at the time that his injuries were limited to a cut leg.
Now it's feared his back injury could leave him out of the driver's seat for the rest of the season.
Japanese reserve driver Kamui Kobayashi will now make his F1 debut as Glock's replacement in Brazil.
Toyota president John Howett said Timo Glock will be staying in Germany to recover, adding: "We hope he can recuperate in time for Abu Dhabi, although at this stage the situation is not clear."