Button unfazed by Monaco crash

The BAR-Honda driver lost control of his car at the exit of the tunnel before clouting the wall heavily at the chicane. Although he suffered no broken bones, the Englishman was too shaken to take part in the race.

"I feel okay," said Button. "I'm fine. It's disappointing not to race but the problem is that I had concussion, which was why the doctors kept me in overnight. I remember the car going a bit sideways to start with, then being totally out of control and hitting the side barrier. It didn't feel like it was hard. Then I can remember seeing the wall coming towards me but after that I am a little bit lost.

"I don't remember how long I was unconscious for. I remember as I came round speaking to Sid Watkins. He said that I was talking but not making much sense. I said: 'What's different, that's me all over...' I didn't have a clue where I was. I remember looking down at my legs as they were hurting."

Button says he is not fazed by the accident: "I have never really had a big accident in F1 but it doesn't scare me at all. You never know if it will but it doesn't, which is the really good thing. I'm looking forward to getting back in the car but I don't want to be silly about it. I'll go through all the training regime first to make sure everything is right.

"It's been getting better every race this season but I am only 23 and this was just one race in my career. There are a lot more to come, so I've just got to keep it calm and wait for the next one. I'm not sure if I will be testing this week but I will definitely be in Canada - 100 percent."