How did mr.wonka manage to save the space capsule

The Knids follow the Capsule into space and begin to dive-bomb it. One Knid had tried to do the same to the Elevator, but the Elevator is thankfully Knid-proof. Charlie suggests that Wonka save them. Wonka drives the Elevator closer to the shuttle, and Grandpa Joe connects the two with a steel cord. The Knids attach themselves to the ship. Wonka drops the Elevator back to Earth, which saves the humans but destroys all the Knids. The Elevator then returns to the Chocolate Factory.