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DARPA LiquidPiston mini X: engine having the size of a smartphone and does not need oil or pistons. - YouTube | Go kart, Engineering, Karting
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No Reserve: RENNtech SLR Racing Kart for sale on BaT Auctions - sold for $10,250 on December 22, 2020 (Lot #40,792) | Bring a Trailer
LiquidPiston releases proof-of-concept video of X Mini 70cc rotary engine applied in a kart - Green Car Congress
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