very nice model!

c + c : if you want the edges to look rounder or some to be rounder and others to be crisp open up the options for polygon>smooth and play around. Also you can select polygon>normals and make them harder or softer which can change how they are computed when smoothed.

another idea is to convert the rough poly mesh to subds and crease or partially crease edges you wanted to maintain.

I'm being pretty damn nit picky as the model is very clean. I picked out only a couple of places where the edges didn't look 100 percent parallel or curves had a corners. the front bumper was one. mostly those wouldn't be visible in a render anyway I don't think.

so i'm trying to pick things out to be helpful but you sure didn't leave much there to critique. Let's see a render with a proper shader!