How car makers turn plastic bottles and Jose Cuervo leftovers into new vehicles

One person's trash is another's treasure — literally when it comes to making cars. 

Ford and other automakers are looking to use everything from recycled paper money to plastic bottles to reduce their carbon footprint. And yes, it smacks of "greenwashing" — after all, it takes a lot of natural resources to build a new car — but they are helping make auto manufacturing less wasteful than before. 

The production process accounts for about 10 to 20 percent of the carbon dioxide emissions generated during a car's lifetime, studies have shown — but most of the CO2 comes from driving the car after it's purchased.  Read more...