could it be that you are the second PHR contest submitter I've found on DA? couple points i'd make ... tooooo much tilt and invest in a tripod. use the timer function on your camera while on the tripod for crystal clarity. actually, the closest foreground is cool. the lines in the pavement.
hey it's all good. i meantioned Popular Hot Rodding because it looks like you took a few hints from them. They think good car photography needs to look like THEIR photography ya know? Don't get me wrong, their mag kicks ass. Did you submit to their contest?
well it's a case of both then but it's all about the tripod. reason is simple - you may have been out during a bright part of the day but in a parking garage the lighting sucks/is low(i'm not saying it isn't usable because it is). add on that it is probably florescent. that means your camera's "shutter" stays open longer making it susceptible to movement from you. next, without spending HORRENDOUS amounts of money on a digital camera, there is lag time from button pushing to picture taking, worsening the effect of your movement on the pic. you don't even have to spend a dime on a tripod, just get a box or whatever you can pack around to set the camera on. sometimes there is a delay function on digitals which means that the pic is taken a second after you push the button OR you can use the timer, use them. anyway, you've got the right ideas already. keep it up.