Another GTPer from SK!! I'm in the capital
It took me about 4-5 tries to gold it. I passed the first car (red) on the outside by drafting behind the next car (blue). Hit the turn and half way through it, got out of the draft and passed the blue car on the inside.
The next part was the trickiest for me, as I tended to lose control getting back on to the straight and trying to draft behind the first and second place cars. Again, the best advice I could give would be to not to try and 'over-control' the car. I gold-ed that event by making as few changes in position to the stick as possible.
Let me know how you do.