Requires Unity 4.3.3 or  higher.
Four damaged, dirty racing cars. 
Customizable materials: colors, patterns generator, adjustable dirt. Demo: GIF.
Layered PSDs.
Highly optimized 3 in 1 textures with a custom shader.
3 LODs
Polycount:
Blue: 4280 tris
Red: 4560
Cyan: 4780
Yellow: 3174