The A2 is able to go at speeds of Mach 4 to Mach 8 (concorde could achieve just over Mach 2). It will carry 300 passengers and able to travel long distance flights ie UK to sydney. That would take an average of 18-22 hours on a normal plane. In this plane it will take 2-4 hours!
Whats more amazing is that this plane will run on hydrogen - making it future proof.
The plane is still in concept but should be operational in 25 years. The plane is twice the length of a big Jumbo and looks like a rocket.