In need of advice

Well wanted to ask from a professional working in the gaming/vfx industry

How to improve the uv layouting on this?

its a simple car model just the body

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/Top.jpg

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/Back.jpg

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/Bottom.jpg

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/Front.jpg

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/Side.jpg

https://2img.net/h/i172.photobucket.com/albums/w8/roninfang/CarbodyUV.jpg

also wanted to ask

how do i get this metalic texture/feel as in real shiny metal like the car wheel here
http://thumbs.dreamstime.com/thumblarge_144/1178140062Q3gI4m.jpg