In response to the several folks who asked about these images here - they begin life as layered PSD files (as in +100 layers) on templates like the one seen here. All the images, numbers, sponsor decals, colors, etc. are done (mostly as vector images) there in Photoshop. Then a flattened image is imported into Nascar Racing 2003 and applied to the wireframe car models already there. The 3D renders are the final product of what this flat template becomes in the game.