Even with an HDRI lighting/FG set up you can still use regular lights if you still need it. There are other ways to increase the light generated by the HDR image though, you should look at at (i.e. make the color of the material where you mapped the HDRI image whiter). The one HDR image I have is 18M in size, just to give you an idea of a quality HDR image. I have looked on the web for some, but I can't seem to find any (for free) that are anywhere near the quality of the one I have


The car looks very good.