The V-Ray BRDFCarPaint2 material node simulates a metallic car paint. It is a complex material with three layers: a base diffuse layer, a flake layer, and clear coat layer. The material allows the adjustment of each of these layers separately.
The new V-Ray BRDFCarPaint2's advantage is that it uses GGX BRDF type and offers base glossiness tail falloff option.
UI path: ||mat Network||> V-Ray > Material > V-Ray Car Paint 2