Car Paint 2 is a node that simulates metallic car paint. It is a complex surface with three layers: a base diffuse layer, a flake layer, and a clear coat layer. The node allows the adjustment of each of these layers separately. It uses GGX BRDF type and offers a Base Glossiness Tail falloff option.
If you wish to disable the material preview or adjust its quality to save processing power, you can do so from the Material Node.