@arrrg @ai6yr Fun fact:Leaded gas was invented by the same person who brought us Freon.https://en.wikipedia.org/wiki/Thomas_Midgley_Jr.My favorite lines from wiki: “Midgley possessed "an instinct for the regrettable that was almost uncanny””Environmental historian J. R. McNeill opined that Midgley "had more adverse impact on the atmosphere than any other single organism in Earth's history"Fred Pearce, writing for New Scientist, described Midgley as a "one-man environmental disaster"