Enter the car you came in and drive it out of the scrap yard through the north exit. Drive the car into the car crusher, then crush it to get approximately $400. You do not need to pick the lock because there are no police nearby. Break into the random car located near the car crusher.
If the engine is facing the enemy, their gunfire can cause it to explode and kill you.
When you are hiding behind a car during a gun battle, do not get near the engine.