Unity 5 Car

These are the instructions for the car asset made by unity:

  1. Start with a suitable scene. There ought to be enough flat ground to drive around on.

  2. Place the “CarPrefabEmpty” in the scene.

  3. Place your 3d model into the scene, as a child of the “CarPrefabEmpty” GameObject. Notice that your car model should be at the same level as the “WheelHub” objects that were already present.

  4. Make sure your car’s position in the inspector is set to 0,0,0. This will ensure your car’s position is aligned with the Empty Prefab’s position.

  5. Expand the hierarchy of your car model in the hierarchy so that the wheel models of your car are visible.

  6. Select each “WheelHub” in turn, and drag the corresponding wheel model from your car into the “Wheel Model” slot of the Wheel component on the WheelHub GameObject. Then click the “Align to assigned wheel model”. If your car has four wheels, you’ll need to do this step four times, once for each wheel.

  7. Hit play, and try driving your car!

I cant find the CarEmptyPrefab

There is another car in the Unity 4.6 assets, which you can easily obtain from the asset store. Hope I could help! =)