Have you noticed how much more glass today's cars use than those of 20 years ago? Automotive engineers are increasing the use of glass in the design and structure of new vehicles. In fact, the windshield in a car may account for as much as 27% of its structural integrity and can help prevent the roof from collapsing during a rollover.
Additionally, your car's factory-installed glass is part of its crash management system and is designed to be used as a "backboard" to properly deploy the passenger side airbag. We all hope we will never need our windshields to perform these safety functions; however, the risks are real. A recent ABC 20/20 News segment documented the real-life risks associated with an improperly installed windshield.