did a lot of research before getting my camera and all of the photographers I was impressed by recommended Nikon. I went to a few camera shops and everything from the accessories to the build quality of the Nikons seemed superior so that what I got.
Also its all about the lens. Dont be fooled by big megapixel numbers etc. The camera can only capture the image that the lens supplies to it. I have the kit lens that came with my d60 and a nikkor 75-300mm which was more expensive than the camera but gives fantastic shots.
Also budget for a good tripod, essential in my opinion, for any car shots where you want to use a bit of camera trickery.
Some examples of pics Ive taken with mine