I made this version of an old model of a range rover. Well, I have not kept the faces to the best but is fine to work with. the doors are openable and rotate around the hinges point. the four wheels are constrained together to the left front wheel for easy animation. So all wheels will rotate if you rotate the front left wheel in the right view i.e the x-axis. When rotated in the z-axis, the other front wheel also turns with it and is very useful for steering. The brake components will also follow appropriately. There is also an empty where the entire vehicle is parented. https://www.youtube.com/watch?v=ODJNZTnp520