Indianapolis 500 rookie Robert Doornbos hit the wall for the second time in as many days.

The Dutch driver, in his backup car, spun and hit the wall in turn two on the 2.5-mile Indianapolis Motor Speedway oval. It's almost the same spot he crashed his primary car on Friday.

Doornbos, who had gotten up to 222 mph in 10 laps, was not injured. It was not immediately known if his Newman/Haas/Lanigan Racing team had another car available for him to drive in pole qualifying later Saturday.

The latest crash by Doornbos appeared to be a considerably harder contact with the wall than on Friday. His car spun and slammed into the energy absorbing SAFER Barrier, severely damaging the entire left side of the Dallara.

Ryan Hunter-Reay and Scott Sharp have also crashed since the start of practice on Wednesday. Both drivers escaped injury and have moved to backup cars for the race on May 24.