Yeah, they would allow vehicles to move along a cable into space, instead of on a rocket.
Well we don't exactly have access to a Space Elevator. Although that would be a fairly convenient way to avoid needing such big rockets.
I love the color red. It is so vibrant! Alright! Did you know Mars is red because of iron oxide? No, I didn't! Isn't Elon Musk trying to get to Mars? I don't really know if he's trying to get to Mars, but he did found SpaceX. That's cool. What kind of rockets do they have? One is called the Falcon Heavy and can put about 8,000 kilograms into geostationary transfer orbit with side boosters. Wow, that's pretty cool. Do you know anything about space elevators?
The design would permit vehicles to travel along the cable from a planetary surface, such as the Earth's, directly into space or orbit, without the use of large rockets.