How do I add realistic actions to a 2D car game?

I was wondering if someone could help me add realistic actions to a 2D car game, specifically as when the car is going up a hill, make it rotate so all the wheels are on the ground?

Is this game top-down or from the side?

What behaviour are you using for the car-movement?

Is the car all on piece or are the wheels seperate sprites?

Will the car eventually be able to do more than just drive on flat ground and hills?

Sorry I actually ended up getting it working! I had to use seperate sprints and pin them together which worked perfectly, thanks though.