Burt Rutan

For the industry we're starting now, for suborbital flight, there is no destination, so the spacecraft you go up in has to be large and spacious. That's why SpaceShipTwo is much bigger than SpaceShipOne: It needs to be because you want those six people to be floating around and enjoying themselves.

The most impressive airplane ever, I believe, was designed only a dozen years after the first operational jet. Stayed in service till it was too rusty to fly, taken out of service. We retreated in '98 back to something that was developed in '56. What? The most impressive spaceship ever, I believe, was a Grumman Lunar Lander.