I think it would be cool if this became a reality, but if the EV push causes fuel to rise to astronomical prices, it may not matter anyway. Waste oil could be an option, but if fuel prices rise that high, people will start charging a lot for waste oil and there won’t be any benefit to that either. I’m not sure how valuable this tech is going to be- it might be too little too late.
Engine that can run on any fuel- Auto Evolution
Engine that can run on any fuel- Auto Evolution