This looks interesting. It's a window film (clear or tinted) that protects against vandalism and attacks. It's made by the same people who make BlastGARD, a bubble wrap product that absorbs energy from bomb blasts.

http://www.vehiclegard.com/home_first.html

 

interesting

 

I wish they showed a price, does anyone know?

 

It said that it starts at $399 for compact cars. Looks cool.