Yo, find out where the nearest film studio is. You might get lucky and speak with someone in the props department. They might have some extra breakaway glass laying around. If not, just do a mad search on Google or a different message boards. There are no producers, directors or stunt people here, just critics. Hope you find what you need bro.
I wouldn't go relying on CGI, you'd need some big ass soft- and hardware and a wizz to make that look good in a movie. Otherwise it will just backfire.
Go oldschool, with the proper creativity and attention you can manufacture cool special effects out of household stuff, simple chemicals and leftovers from the butcher's.