The XP-67 Moonbat One of James McDonnell's early concepts, the XP-67 Moonbat was a blended-wing-body design whose performance, thanks to anemic engines, was stamped FAIL. But get a load of the ...

Often considered one of the biggest “what-ifs” in American aviation history, the XP-67, often nicknamed the “Bat” or the “Moonbat” was also the first design built by the McDonnell ...