DeHavilland Comet (the first jet airliner, marking a new era in
civilian transport)

Carried too few passengers at too high a cost. It was the Concorde of
its day, without the longevity. A conceptual dead end.

all the best -- Dan Ford
email: (put CUB in subject line)

see the Warbird's Forum at www.warbirdforum.com
and the Piper Cub Forum at www.pipercubforum.com