Comments by "Joseph Martin" (@josephmartin1543) on "Paris to New York in 1.5 hours: The hydrogen jet looking to usher in hypersonic air travel" video.

Good news , Destinus from Switzerland is building a combination Rocket & Airplane . Is Geological Hydrogen feasible ? Earth has Hydrogen for 500 years , who will harness it ? " A European jet start up wants to fly..." Insider.
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