4 ms·

I'm sure they'll reconsider as soon as someone develops jet engines capable of mach 2.2 that don't burn fossil fuels. In the meantime, since speed is their goal

• wbl 8y ago
  And doesn't spew a giant plume of radioactive gas while irradiating the passengers.
  • reaperducer 8y ago
    That's extra on United.
    • robotresearcher 8y ago
      United could burn luggage for fuel. They're gonna lose it anyway.
• andygates 8y ago
  If the thing needs to burn go-juice, give it green go-juice. Isn't biofuel-derived avgas a thing yet? Startup idea...