Following completion of the current Ares V super-heavy-lift rocket program, the Space Launch System, I believe that the government should commercialize all future launch vehicle development and operations.

FORBES: Rescuing NASA From Terminal Public Apathy

SpaceX was quick to make the point that the ability to carry on despite an engine failure demonstrates a big advantage of multi-engined rockets like the Falcon (Space Shuttles and Saturn V moon rockets could both do something similar).

ECONOMIST: SpaceX goes to the ISS

The Space Launch System will be NASA's first exploration-class vehicle since the Saturn V took American astronauts to the moon over 40 years ago.

ENGADGET: NASA's Space Launch System to rocket into deep space, unravel the universe's mysteries (video)