Normal maps

No.532653 ViewReplyOriginalReport
Guys, im noob here and need help. Normal maps are used to transfer the high poly information to the low poly mesh, right? Like scars on a character skin, his own skin, those little details... But say, i have a 3d car model. And the car haves a super smooth surface. Almost like a mirror. So my question is: will normal map affect in something when applied in the super smoothed car surface?

I mean theres no heigh in something so thin and smoothed....