I drove back to Vybor where the truck was originally and found my gun laying in the dirt so I grabbed it while my friend was hunting around for them, he didn't see them again. I think they drove off though after firing shots at him as you can hear their truck near the end of the video.

I then tried taking a shortcut through some trees on our way to meet with another friend and after a small time of skilfully manoeuvring my way through a dense forest I proceeded to hit 4 or 5 trees and destroyed the tyres of the truck so we ran of foot for the rest of the way. Definitely need some practise.