No HDR. Just multiple exposures masked into one frame. One exposure for the sky, one exposure for the foreground, masking in what bits I need and adding a whole lot of post.
Haha, yup! William Stern and Dejan Sokolovski assisted on lighting for the commercial shoot, so the Viper turned into a bonus we all got to shoot at the end of the trip. Each one of us went a different direction with retouching, so that car yielded a vast array of different looks at our disposal.