"The coolest thing...let me think." First, he has to be sure he gets the word "cool." And then he has to decide.
"That would probably be a supersonic jet engine. But you won't see anything like that today. We're still a long way from having any sort of prototype, let alone one to attach to a plane."
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timeasmymeasure
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Date: 2014-06-23 08:38 pm (UTC)"That would probably be a supersonic jet engine. But you won't see anything like that today. We're still a long way from having any sort of prototype, let alone one to attach to a plane."