Hey man,
Check this new thread out.
http://www.m3post.com/forums/showthread.php?t=1198907
Use the longest end of whatever zoom you have and try to recreate some of these shots. You won't get the lighting or the colors right since these were done at a specific time of day and with skilled editing, but focus on composition.
You'll notice most of the height is very low to the ground so you are looking at the car straight on, not top down. You'll also notice simple backgrounds. You'll also see the angles. Some straight on, others from more of an angle. Notice also the position of the car within the frame. Instead of always in the middle, some version of the rule of thirds helps to create a bit of dynamics to the image.
After you get a few of these down start playing around with Aperture Priority first and Shutter Priorirty second. Full manual is last.