A Patriot sits in the park below Cedar Grove. When you get in, a timer will start. Each checkpoint gives you 15 additional seconds. Collect all checkpoints in the allotted time. Exiting your car ends the mission.
This is the final offroad mission and appropriately difficult. You won't always be able to drive straight up the slope faces and may need to go around. Particularly on the peaks and cliff edges, go very slowly and inch the car forward ready to reverse. You'll have plenty of time to be careful if the first few checkpoints go well. Things get somewhat easier once you are up the bluff past Cedar Grove.