This is story related, but after you get to Joe's Apartment and he says we need to go see Mike for a job. Drive a few minutes to the junk yard and talk to Mike about getting a car in a certain area. When you get the fenced in area you will jump over and initiate a fight scene, beat him up and walk towards your target car. Gun scene started (good thing Joe gave you that gun, Right?) shoot the 3-4 guys around the car, then proceed to car and smash window in or use lockpick (using lockpick gives you more money). Securely take the car back to the Mike and receive your money and your achievement.