Hiya DS,
Great Mazda pics. The RX-8 looks so nice and smooth and yellow, its great.
The second one is my favourite. The lines on the car are nice, defined and sharp, the taillights are looking fantastic and detailled. The wheels look great as well. There is one small problem however, and I'm surprised nobody has noticed it yet. On the side skirt, there is an odd looking area which I presume wasn't selected when you blurred the background and has sorta gone a bit odd. It looks sorta like the blur has tracked the wheel into that area. A minor error, not hard to fix, but distracting in an otherwise great pic all the same.
Overall I give this update 7.5 out of 10.