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Aquarius Engines, claims to have developed a car engine that doubles the efficiency of conventional engines. : r/Futurology
PSA evaluating Aquarius Engines' free-piston linear generator for range-extender - Green Car Congress
![A Little Startup That Could: Aquarius Builds an Engine Others Only Dreamed of - World News - Haaretz.com A Little Startup That Could: Aquarius Builds an Engine Others Only Dreamed of - World News - Haaretz.com](https://img.haarets.co.il/bs/0000017f-e74d-df2c-a1ff-ff5d4bd30000/cf/a0/c512dcd535351b02bc992d860e0e/1261464241.jpg?precrop=1596,1596,x326,y35)
A Little Startup That Could: Aquarius Builds an Engine Others Only Dreamed of - World News - Haaretz.com
![Aquarius launches hydrogen-fueled linear single-piston engine | Automotive Powertrain Technology International Aquarius launches hydrogen-fueled linear single-piston engine | Automotive Powertrain Technology International](https://www.automotivepowertraintechnologyinternational.com/wp-content/uploads/2021/05/Screenshot-2021-05-18-at-13.28.53-e1621341208465.png)