You been downvoted because you&#x27;ve said nothing on topic or substance and moved the conservation to a whole new pet political topic you seem to have. Nothing in the article talks about the environment<p>&gt; the purpose of developing a more efficient engine is to reduce emission<p>Generally saving money is why.<p>And as hackers we love making things more efficient.<p>Plus as scientist we love new discoveries, cause who knows where they&#x27;ll go. Why couldn&#x27;t this work on a hydrogen or future engine X? Perhaps it won&#x27;t but scientists discover cause we can.