Original sentence: On February 5, 2008 the company announced it had designed a passenger plane capable of hypersonic speed (Mach 5+), the A2, to the concept stage
Edited sentence: On February 5, 2008 the company announced it had designed a passenger plane that would be capable of flying, non stop, halfway around the world at hypersonic speed (Mach 5+), the A2, to the concept stage