The untapered, dynamic space elevator cable (was Seth Potter: SBSP $

> Moving cable space elevators are just elegant from an
> engineering viewpoint. They take cargo and people to
> GEO for 15 cents a kg in energy cost. If only we had
> the cable

Is it a tapered cable? Perhaps a dynamic untapered cable could be moved by a static tapered cascade of solar- or nuclear- powered motors, each supported by its own static tapered cable. In that scenario, no given portion of the untapered dynamic cable would ever be very far from another motor-support providing vertical support.