Thanks for the advice.what camera are you using for these shots? if you're using a DSLR, I've found polarising lens filter a huge difference for taking photos of static cars - you can cut right through the reflections with them and really bring out the lines of the car
Get on speedhunters for more car photography stuff - I tend to browse through there most lunchtimes at work and have picked up a few pointers from there
Cheers for the advice.it would be hard to take a bad picture with a 7d but as said above i prefer the 2nd pic,don't keep your camera in auto mode (p) i think,but experiment with the other modes of the camera,and plan what your taking pics of and make sure you get the subject matter in shot when you want to,
also you might find that when you take pics with a slower or faster aperture,the light will play a big part of the picture (night for day/day for night)this is when the light is changing first thing in the morning,from night to day and also the other way round at night,I'm not being critical its just i have done the same thing,also if you can get yourself down to a race track and try and get some pics of the moving cars,easier said than done if you want your pics to show movement,
these are just my opinions but good luck with your photography.