Just a short comment though all the answers are perfect! :)
In hungarian as well as in some other languages You can change the order of the words. In some cases the change  effects the interpretation of the sentence but in some cases it does not.
So let's take the last sentences:
It also could be said: "Kérek egy sört" which considerably doesn't change the meaning but if You take the last sentence and put it in this order: "Ülünk az autóban" this sentence puts emphasis rather on the ongoing process of sitting (being) in the car compared to the original which one puts more emphasis on the place (in this case in the car), Hope was understandable ;)