Well we can all learn from this video:
1. Make sure the guy in front knows about you before you overtake.
2. If you see the guy in front of you is also driving as fast and agressive as you are, expect him to take the first gap he can.
3. While passing the car, expect him to turn in front of you or force you off the road - if prepared, it may make your reactions a bit quicker.
4.
TROLL: Think about the typical Seat driver. Young, agressive, point-to-prove, etc... You'll then think twice about where you want to overtake him.