11 links have been added on 4 ideas about #gas.
  1. Whoever had this idea first will change a bit of history. Early days though now… “The lean-burn, compression ignition (CI), direct injection (DI), is the most efficient internal combustion engine (ICE) (Zhao, 2009; Mollenhauer and Tschöke, 2010). It produces engine-out emissions of nitrous oxides and particulate matter (PM) that need after treatment to match the extremely low limits set up for transport applications (Lloyd and Cackette, 2001; Burtscher, 2005; Maricq, 2007)”

  2. I agree, until electricity is made greenly you are better off using one of the other alternatives to gas. Here is a decent list of options https://fortune.com/2013/11/01/10-alternatives-to-the-gasoline-powered-engine/