This would be rather useful in remote locations which find themselves with surplus plastics (remote islands with no landfill options for example), surplus renew

This would be rather useful in remote locations which find themselves with surplus plastics (remote islands with no landfill options for example), surplus renewable electricity and big old diesel engines. Those are unusual circumstances, but they are out there, and if there were organisations willing to fund the electricity aspect, the issue of plastic litter could be reduced in many places (and that includes ghost nets and other seaborne plastic). The resulting oil could pay back some of the cost of production, and be sold at a discount to the heavy diesel engine users in the area, on the condition that they uprate their emissions equipment. This may or may not have helpful effects in local markets.