I think that we should be able to shoot from our vehicles due to the fact that this makes gameplay more fun but most importantly is due to the fact that implementing this will let players who do car missions protect themselves from scums who shoot car drivers while doing missions purposefully.
Of course the damage dealt FROM the car should be decreased (just like damage dealt TO the car is decreased).
A special button could be made that activates the car shooting mode which makes driver of the car static (he will simply loose control of the car) or which allows second player in the car/boat to shoot from the car/boat.
If this be implemented,we might as well have cars in events like CTF or new mpx events.Cars will play either role of a tank or role of a distracting unit.
Like I said,damage dealt FROM the car must be decreased JUST like damage dealt TO the car.
I'm waiting for BitzSam or snk to check this thread out.
I'm well aware of the fact that this idea has been suggested before but my idea is more elaborate,I'm actually trying to come up with a way to implement this and not just saying:"Add x into Graal!"