Note: This requires the Lifeline DLC to have access to car trunks. Select a vehicle and go on a supply run. Collect a total of six supply rucksacks and place them in the trunk by approaching the car or truck from behind and pressing E PC when you are close. When it is fully loaded drive back to the base and go to the east gate (with the parking spots). Park your vehicle to the right of the gate to have the supplies automatically unloaded.