Why did Ryan Philippe's character SPOILERS...
... shoot that man in the car?
Also, why did he even get MAD at him in the first place? What did that man say that made Ryan Philippe's character so uptight and angry there? So perhaps his humour was a bit misplaced and whatnot, is that really a reason enough to throw him out of his car like that?
And couldn't that man also perhaps have retorted on the order of - "OK if I offended you in any way, I'm sorry, I'll be quiet and won't say another word, but could you please just drop me off at this one point and we will call it even, hey if you even want, maybe I can give you a little bit of cash or something?"
And why would he simply suspect that based on an argument and based on that man's stubbornness to not go for what is in his pockets, that the man would have a weapon of any kind on him and even, spoiler, shoot him? (I bet that man didn't even suspect that Ryan Philippe's character could be a cop!)
It just seemed rather rushed and unbelievable.
Because throughout the film, before that incident, he was generally seen as a nice and decent police officer, especially how he dealt with that producer etc.
But still... Provoked in an argument on one night in a car and then shoots the passenger dead.