A think a solution to this would be to implement this idea, but have the cars restricted to 3rd person only.
As for my opinion on the suggestion itself, I'm okay either way. I personally don't see the point in having cars in the game other than to direct convoys, but that's coming for me, a wannabe Truck Driver who likes to stick to herself. Other people enjoy driving the cars around just for fun, and I can respect that. I just have more fun in a truck :'D