If your car is oversteering into the inside wall when drifting around a corner or hairpin hold 'Boost' and it will move away from it. If it's the outside wall it is heading towards then release 'Accelerate' for your car to move away.

Special Cars
Unlock the following cars by doing the corresponding tasks

Dominator Assassin:
There must be a Burnout 3 gamesave on your memory card

Unlock Madden Van:
There must be a game save on your memory card for Madden 2006.

Black Elite Racer:
Get 'Elite' Rank

Revenge Racer:
Get 100% Game Complete

Logitech World Racer:
Complete Rank 10 Ultimate Revenge GP

Hot Rod:
Complete 'Lone Peak' Challenge Sheet

Euro Classic LM:
Complete 'Eternal City' Challenge Sheet

Criterion GT Racer:
Complete 'White Mountian' Challenge Sheet

Nixon Special:
Complete 'Eastren Bay' Challenge Sheet

Custom Classic:
Complete 'Sunshine Keys' Challenge Sheet

EA GT Racer:
Complete 'Central Route' Challenge Sheet

Low Rider:
Complete 'Angel Valley' Challenge Sheet

Etnies Racer:
Complete Motor City Challenge Sheet