One of the projects he supports is the Space Elevator;
“The space elevator is a proposed system to transport material from the earth’s surface into space. Many variations of this idea have been proposed, but the primary idea involves an elevator-type car that travels along a fixed cabling system held in place by a geostationary satellite orbiting the earth. The space elevator is intended to replace our present system of using rockets to transport people and equipment outside of the earth’s atmosphere. Current technology is not capable of manufacturing a cabling system that is both strong enough and light enough to make this connection. Most of the recent efforts have focused on the use of carbon nanotube-based materials for the tether design, since the strength of microscopic carbon nanotubes appears great enough to make this possible. A functional space elevator will become a primary driver of space commerce, enabling travel beyond earth’s gravitational pull for a fraction of today’s cost.”
Nice to know we’re on the list but he’s not emphasizing the main advantage of a Space Elevator, it’s scalability. There is really no limit to how big you can build this thing and thus how much capacity it can carry. Yes, the price per kilo has to be reasonable, but if you can’t carry hundreds or thousands of tons per day into space, the commercialization of space will be a very slow and painful process, no matter how inexpensive it is.
Freight cars, think freight cars to space…
(Picture of Freight Car from here – click on the thumbnail for a larger version)