Looks good. No EXIF data since you used CS4 this time, but I'd guess 50mm f4?
Bad points are, it's a bit flat, not much colour in it. Car could be more isolated with a wider aperture, but not too much wider. Looks like the depth of field ends not much after the rear end, so that's good. Maybe a tiny bit too wide, but not much.
I edited it for shits and giggles. Hope you don't mind. Just in case you see something you like, all I did was:
- Increase saturation of entire image
- High Pass Filter sharpen of original image, layer type 'Vivid Light', opacity 30%. Erased all of the HPF layer except the car, to help isolate/sharpen it.
- Selected all background/foreground except the car using quick mask/brush, slightly blurred.
- Desaturated windscreen as increasing saturation made the blue sky reflection too strong