Car if fully rigged and very simple to use! Simply click the curve in the front of the car and the controls are in the channel box.
Features use of mental rays approximation node, which smooths the geometry at render time with little cost.
All textures located in .zip file
I've also included multiple car paint shader colors which are in the Hypershade.
The easiest way to change the color of the car is to right click on the current paint > select all objects with material > right click the desired material > assign material to selection.