I can see uses for robots who comb jellyfish out of water and remove them from the beach. I can also see uses for robots who cut down Heracleum mantegazzianum

I can see uses for robots who comb jellyfish out of water and remove them from the beach. I can also see uses for robots who cut down Heracleum mantegazzianum and ideally make biodiesel out of it. I'm not going to develop or buy either one, though.