Just bliping through my iGoogle and saw this:

...The motor, called DM-2, is capable of producing about 22 million horsepower and generating as much as 3.6 million pounds of thrust. It is about 154 feet (47 meters) long...
Pretty impressive, I wonder if they make a small block version?

You can see the whole thing here: http://www.msnbc.msn.com/id/38935734...science-space/