Pretty cool in my opinion.

The shading doesn't look like metal, reflective or not.

Your father has a Lamborghini? That must suck :P
Shading looks good on some places, but random on others. You should check reference (go look at the car again, take a picture!) to get this right, the final effect will compensate the effort. The reflection on the glass seems random, doesn't follow a realistic pattern or lightsource.
Also, clean up the jagged lines, they don't look right. You can do this by attempting to round the line more so it follows a more fluid and smooth curve, or by carefully adding anti-aliasing (using colors to blend the jagged parts).

The car doesnt really line up right.
http://i11.tinypic.com/62h1a51.png
Still its pretty good, also the back just kinda cuts off

The right headlight does not look right to me.

A little lopsided, but it's good