When racing against the O'Gradys, choose the SUV. As you start, the two buggys in front of you will take the lead. As you approach a corner, both buggys will swerve on to a grass verge. Do not follow them. Instead, continue along the road as you turn the corner. The buggy in second place will land in front of you. Ram him and he should go flying, putting you in second place. To over take the buggy in front of you, floor it as you enter the town. If done correctly, you should fly past him and be in first place at the last check point.