https://en.wikipedia.org/wiki/Custer_CCW-5
Prototype channel-wing STOL comercial aircraft (More like GA but one can dream 🙏), only one was built and went through full flight testing but never went into production.
***STATS***
Capacity: 4 passengers + 1 pilot
Maximum speed: 220 mph (350 km/h, 190 kn)
Landing speed: 15 mph (24 km/h, 13 knots, yes i'm not joking )
Stall Speed: Literally VTOL capable i PROMISE to you i'm not kidding
Cruise speed: 180 mph (290 km/h, 160 kn)
Range: 1,680 mi (2,700 km, 1,460 nmi)
Service ceiling: 20,000 ft (6,100 m)
The Custer CCW-5 was a twin-engined, 5-seat aircraft of pusher configuration, which used a channel wing claimed to enable low speed flight and short take-offs. Two CCW-5s flew, eleven years apart, but the type never entered production.
The aircraft was the third and last of a series of Custer Channel Wing designs.




