How do you drive a spaceship? I mean, what starts it up and allows you to go from planet to planet? Are they like space cars and we just turn the space key to start the space car? Or is it more of a biometric system that only starts up when the owner is sitting in the captain's chair (they can still move around the ship, they would just need to be in the seat to start it)? Or is there something else? Something I overlooked? A piece of text that explained how they worked.