well first off try and get the whole car in the photo lol or if your trying to get just part of a car in a photo, focus on that part and zoom in on it(ERG has good examples of this in the "P&G meet photoshoot" thread), dont just have half your car cutoff and then a wide angle of a landscape. if your having problems with blurriness use a tripod, they work wonders. also if your shooting at night use a tripod and put the iso on the lowest setting possible to avoid noise. also use a different host such as flickr rather than photobucket which is notorious for robbing people of picture quality.