I've finally got round to doing a bit more to my Volvo, and also properly tried to used HDRI. I've done a bit more to the rear, and made a radiator grille.
The curvature of the bumper is not yet perfect. And a little tip: try and get the whole shell of the car done before applying materials to it. I find it better to focus on one thing at a time so that you can get more geometry done :P
I'm just glad to see more 3d models here being made by the community