Five leading U.S. global companies, including Coca-Cola and Ford, unveiled a joint effort to develop 100% plant-based plastics in their products, cutting the use of fossil fuels.

Coca-Cola, Ford, Heinz, Nike and Procter & Gamble said they were launching a working group focused on speeding up the development and use of 100% plant-based PET plastic. PET, also known as polyethylene terephthalate, is a durable, light-weight plastic.

All five companies use PET based on fossil fuels like oil, in bottles, apparel, footwear and automotive fabric and carpet.

The companies pledged in a joint statement “to champion and support research, expand knowledge and accelerate technology development to enable commercially viable, more sustainably sourced, 100% plant-based PET plastic while reducing the use of fossil fuels.”