& back on topic, here's Monash turning plastic into diesel fuel:
https://lens.monash.edu/2018/06/05/1...stic-into-fuel
heaps of links all over the web of people breaking down the plastic into fuel. This also avoids plastic accumulating in our oceans as it runs off, and this is a massive problem at the moment. All those milk containers, I read each one has 1/4L fuel in it...