A Cadillac Made with Glue
To make the CT6 range the same weight as the current CTS, Cadillac made the entire exterior out of aluminum. But Cadillac also used high-strength steel for safety throughout the chassis, and the car is joined together using welding, but also hundreds of feet of structural adhesives. Don't worry: Modern aircraft are also glued together, and the resulting bonds are stronger than welds, and even stronger than the metallic structures themselves. This also ensures that the two metals don't fight each other and create weaknesses, because aluminum and steel create a chemical reaction that causes a kind of corrosion. The glue is a 21st century way to make a stronger car that's also lighter.