Polygon Count in 3D Modeling

In 3D Modeling, most things you create will go into a game. When in a game, everything you see would have been made with 3D modeling.

The polygon count determines what the object will look like in game. A lower poly count will make the object less detailed whereas a higher poly count would make the object more detailed and eye catching. Poly count is really important when doing objects for a game, because making objects intended just to be in the background would normally be set to a low poly count, making it so that more important things in the game like weapons, vehicles and main parts to the story line can be set to a higher poly count to make it more detailed and eye catching.

These are the same cars with the different poly counts, what do you think of them?