Fisi's overtake move on Coulthard [youtube.com]

This weekends Monaco F1 was an absolute ripper. I missed a little as I drifted in and out of consciosness (damn Australian timezone), but my favourite move of the whole race has to be this one, when Fisi unlapped himself from Coulthard.

http://youtube.com/watch?v=pcCkL4-NsYQ

If he can do this, why did he wait for the shame of being lapped by his teammate to pull it off?

It's a little reminiscent of some of Sato's old moves, but Fisi actually has the skill to pull it off. Of course if you're going to try a move like this, do it on someone as skilled as Coulthard (who you know will see you) and when it's not for position (so he would rather save his car than fight for the position). I'm not sure that it would have stuck against Schumi...