To break out of seattle, you need to go close to the outside wall on the main straight in a very fast car, and then you need to turn into the wall right as you hit the barrier at the end. You need to time it so you hit the corner right at the time you would have hit the wall, so basically, it has to be perfectly into the corner of the track. If done right, you should pop out of the track.
Theres also one in Cote de Azur, after the long curving straight that goes through a tunnel and then downhill, if you hit the corner of the track where the chicane is, you can also break out there.
@Pink_the_Floyd and opendriver19a: Why are you so eager to get this thread closed?