After testing a few methods, I have developed a pretty decent car paint shader. There is a lot more work to be done for it. It's not particularly adaptable. It takes a very specific environment to make it look this way. Its also not very well optimized. These shortcomings ironed out in the next couple of weeks while I start work on the first phase of the playable portion of the project. The customization garage.
Base Coat Shader
Base Coat + Clear Coat
Flake + Clear Coat
Full Shader with All Layers