The Celera 500L. (Photo courtesy of Otto Aviation.)

Otto Aviation recently unveiled the Celera 500L, its newest fuel-efficient passenger aircraft. The full-scale prototype has already had 31 successful flight tests and will soon be entering the private air travel market. The aircraft has a fuel economy of 18 to 25 miles per gallon while having an impressive cruise speed of 450 miles per hour and a range of 4,500 miles. Its design features laminar flow over the fuselage, wings and tail surface…

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