It's about saving Pepsi money. Pepsi-Co merged with Frito Lay. If they can use scrap like corn husks and potato peels (which they already make in abundance) to create plastic bottles then they can essentially supply themselves with their own building materials and eliminate or reduce the need to deal with oil suppliers.

Be careful, I've heard dihydrogen monoxide is deadly under the right circumstances. ;)

Same for me, at firewall level, with netfilter, geoip and this antichina filter