Starts with an O, ens with a N.
A whole 400 tons it can send.
But here's the catch, it's not just LEO,
But anywhere you want.
Apart from that, cool landing gear,
And a cargo bay with a hinge joint!
This masterpiece was a real dream,
But it was never truly seen,
It was meant yo be posted perfectly,
But it would never come to be.
Cos "better is the enemy of good", as they say,
And it would never see light of day.