INDIANAPOLIS, June 14 - Poland's Robert Kubica shrugged off his horrific Canadian Grand Prix crash on Thursday and declared himself ready to race at Indianapolis this weekend.

"I feel 100 percent," the BMW Sauber driver told a U.S. Grand Prix news conference. "I really feel like nothing has happened."

"I had a bit of pain after the first day but I was 100 percent okay, no headache, nothing," he added of Sunday's accident.

"It's very important to come back as soon as possible. Of course we have to wait for the FIA doctors to give me the okay but I feel like nothing has happened."

Kubica must still undergo a mandatory fitness test at The Brickyard before he can race but expected that to be a formality.

He said Montreal doctors had given him the all-clear after they released him from hospital on Monday.

"Lets hope the car will be in good shape and the doctors will give me the okay to race here and to be competitive. Hopefully I will be back in the car but with a better performance than in Canada," he said.

The spectacular accident occurred when Kubica's car made contact with the rear wheels of Jarno Trulli's Toyota on the approach to the hairpin on lap 27 on the Gilles Villeneuve circuit.

The 22-year-old's car took off, flying through the air and slamming into the wall before barrel-rolling across the track. Kubica's feet could be seen through the sheared off front end of the vehicle.

"I have seen it live," joked Kubica when asked if he had seen replays of the crash. "What I remember, I remember what you see. I hit the wall, when I stop, I stopped. Nothing more.

"When I stopped I realised I was not in bad shape and that was really important for me.

"I was checking myself, moving around and I felt a little ankle pain but that was all. It shows the push of the FIA for safety, probably 10 years ago I would not speak, this time nothing happened."