"Are you sure? They are certainly patented out the wazoo."
Yup. There's no copyright on a car. You'll find a copyright notice in the owner's manual, though, but it only covers the manual.
Check it out.
I believe ONLY the logos, names of makes and models; are copywrited.
As a Protestant, You could buy a Ford, cut off the fenders, put on a Chevy grill and chop the roof and put on a Mercedes set of bumpers if you wanted too, it's your God-given right!