Ray wants you to collect evidence from a DA's car by ramming into it and grabbing the evidence that drops. Once enough evidence is collected, he wants the car to be set on fire to destroy it all.
Get a car and find the DA's car. Once you hit the DA's car and it drops some evidence, you are given a two-star wanted level. Dodge police cars and keep hitting the car and collecting evidence until you got enough. After getting 6 pieces of evidence, get out of the car and burn it to complete the mission.
Ray Machowski