Can I cut side window glass?

Notquite, RustyRatRod.

Safety glass is glass that breaks in a safer manner than plain glass, which splinters into jagged, dangerous shards.

Tempered glass and laminated glass are two kinds of safety glass.

On most cars, including all A-bodies, tempered glass is used for all windows except the windshield. The windshield is made of laminated glass for a couple of safety reasons—one of which RustyRatRod already described; the glass adheres to the butyrate interliner so shards don't go everywhere. The other reason is that if the glass layers will crack (or get a bullseye knocked out of them, etc), the rest of the windshield remains optically clear. A piece of tempered glass, struck or cracked anywhere (or cut, for that matter), immediately crumbles into roughly popcorn-sized granules—no see-thru possible, so that would be dangerous in a windshield application.

Laminated glass can be cut. Tempered glass can't.