The Mahi is a concept car of mine from about 2 years ago, re-rendered and re-mastered for Cycles. In addition to the model itself, which comes with some cool rims and whatnot, you also get a re-useable node materiel (recently improved over the one I posted just a few days ago) that allows you to change the color of your car with one click. In the bottom of this description is a my YouTube tutorial that further explains the node setup. Please attribute me if you use the model, as it is my own design, and I'd love to see what everybody can do with it! Email me with any questions. Adios!