Maybe the path to a low carbon future is one step at a time. To find out more about how Toyota's innovations are not just another "carbon-copy," check out the carbon section of the 2014 North American Environmental Report. Mazda develops bioplastic for exterior car parts Mazda Motor Corporation has developed a bio-based engineering plastic suitable for exterior automobile parts. The new bioplastic will help Mazda decrease its environmental impact. Made from plant-derived materials, it curbs petroleum use and with it CO2 emissions.