I was in the Window Tinting biz for 16 years...
Kinda depends on what what degree of silver youre talking about..
Silver reflective window film (mirrored) in its most reflective form is intended for residential/commercial applications only..cpl reasons
1st At night it will reflect back on you on the interior side and make it impossible to see out.
2nd It generally has a much less agressive adhesive applied to it and depending on the curve of the glass on the car it can be very difficult to install.
3rd Its illegal in many places and the cops will pull ya over for it.
I have installed reflective commercial films in the form of graphics on some peoples vehicles and for the most part they have had not trouble with these kind of applications.
Now having said all that there are HI PERFORMANCE films for automotive applications. They do have a somewhat reflective apperance (tho not to the same degree as the above commercial films) and are much better at reducing the heat, plus they are not dyed, they use actual metal particles to achieve the reflective apperance so you wont have a problem with them fading over time.
I imagine this is the type of film you are thinking about, just be sure if you want this you ask for "HI PERFORMANCE AUTOMOTIVE FILM" it generally comes in 3 levels/degrees of darkness or shading:
35% light
20% meduim
5% dark
anyway..I don't have any digital pics of my work to post, but this link has a few examples for you.. scroll down a bit.
http://www.tintdude.com/mirrortint.html
hope it helps
