One late 1960's/early 1970's dictionary book said that SST planes are likely to become popular form of long-distance travel in 1980's.
Concorde and Tupolev TU-144 were put to production but did not fare well, and it is unlikely that one takes risk today to attempt same.
Let's hope that airline food is more tasty today.
http://www.globalsecurity.org/military/systems/aircraft/b2707.htm
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