I like some of the efforts shown here but I tried not to alter the picture too much. Tried to keep it as close to what I think the original intention was.
Used Paint Shop Pro X2 12.5 to open the .nef file. Processed it and saved as a .jpeg (later reduced size for Flickr)
Colour Balance: 4190 (Little bit warmer, more 'aged' look.)
Exposure : Shadow/Midtone/Highlight: 25 / 30 / 0 (Bring detail out of shadow, & some colour in the midtones)
Saturation: Histogram Adjustment - reduce high end luminanace by 1% (255 to 235) to bring out a litlle more colour)
Contrast: boost by 10
Tiny little bit of Burn Brush on mirror and headlight so they are not drawing the eye so much.
Sharpen: High Pass Sharpen - Radius: 10 Strength: 50 Blend: Soft light