There was a fun task in SpinTires 2011 that I enjoyed doing. Finding package boxes and delivering to one of the wharehouses on the map. We should have this game mode again, it will make Mud Runner a HIT because Spintires was one of the most popular game of all times and it's well known.
The idea was to find packages and deliver them. Each time you did a run, you un-locked add-ons or trucks. Before hand you only had a very limited kind of trucks to choose from and add-ons.