> 23.65 tonnes of plants were required to make just one litre of the petrol available at your local station The correct number would be closer to 3.54 tonnes o

> 23.65 tonnes of plants were required to make just one litre of the petrol available at your local station The correct number would be closer to 3.54 tonnes of plant material. The other 18.91 tonnes aren't spent. They are instead fully recycled and re-enter in the system (or go away out of the oil processing chain).