Quote: "I searched car images from google then put some on. Is that illegal or something?"
Yes. That is illegal, but don't take offense. It is a common internet misconception. You either need to take the image yourself, or get them from a site like CGtextures and make sure you follow the rules of the End User Liscence Agreement (EULA). The model packs here are not made by using a google search. I would be willing to bet that every model sold by the game creators is either a custom image or made from a royalty free media site, and they probably have documentation to prove it.
Using someone else's image is not a bad thing (let me finish) as long as you have express written permission to do so. Like I said, don't be offended many people before you have thought that google images are ok to use and I am sure you will not be the last. I suggest grabbing a cheap digital camera, even a used one, and get a program called GIMP and learn to make seamless textures and such. Your modeling skills look good, just a few tries with the textures and you got it.
A lot of people here are also willing to help you texture and to help you learn how to texture, I believe there is a sticky link that lets you know their skills and rates if any apply.
Long story short, just because it is on the internet does not mean it is a free for all.
Good luck, man. Hope to see more from you.
