FUEL: REFUELED is an enhancement modification for the game FUEL, which brings multiple bug-fixes, improvements and the addition of various new content.
Some of the vehicles have been known to have the wrong drive layout - i.e. one vehicle such as the mudhog is somehow 4WD and yet should be RWD (thanks to 'hi-ban' for bringing this to my attention). A few other vehicles have similar mistakes like this, and while it doesn't exactly have a major effect on gameplay as a whole, its still a mistake that needs fixing.
With this update I've also begun bringing the drive layout information into the client via the garage UI, ideally the vehicles should have the same traits as a RL vehicle with that configuration and is thus useful information to know.
Also the Mudhog had an issue with not displaying skid marks from the front wheels, this has also been fixed. More info in this forum thread: Moddb.com