Would love to see some vehicle fixes in the changelog someday soon. Gunter not going up hills where you could physically push the car up in reality is, pretty bad. Sure 'authentic' but authentic is made for fun. Getting stuck for 20 minutes on a 5 degree incline hoping the server full of people don't shoot you and instead just point and laugh.
Had an incident where me and a bud found a car, fixed it, drove it about 3 mintues, got stuck going up a hill at like .05Km/h, dude in full kit ran past us 'maybe you should get out and push.' Good times.