I wonder how long it will take until there will be a supersonic airliner again? I don’t know of anything like a “new Concorde” in the mid-term pipelines of any of the few major manufacturers of commercial jetliners (there are a couple of ongoing “low budget” studies though). Supersonic travel is not so à la mode due to its historical association with high fuel consumption, environmental pollution and high operating costs. However, supersonic commercial travel has distinct advantages from an economical point of view and I can hardly believe that the world can do without it for a long time. Further, technology has made quite some progress since the development of the Concorde (more than 40 years ago!) which may enable future supersonic airliners to overcome some of the deficiencies and disadvantages of their predecessor(s).
Some nice videos about the Concorde:
 Commercial “space trips” for fun don’t count ;) They’re certainly a great personal experience, but their importance to world economy is probably negligible.