There was a thread about this on another forum, from where the video originally came. The kids in the car specially requested that she powerslide as much as possible when going through the track. Also, at the very end of the video when they are just accelerating and then they all go "aaaaaaaahhh" and start laughing, it's because they were in P400 mode and one of the kids commented how he was not that impressed with the power. They then realized they were in P400 mode and hit the P500 mode and they all suddenly felt the difference. The original video has captions saying "P400" and then "Now P500" or something like that.