Saving energy is silly; the bottom line is money (was Forklifts tip

Why not both mass drivers and elevators? A high velocity mass driver can move a large amount of lunar material in a short amount of time in the required direction for collection in space, presumably L-2. In another application, a mass driver can slow and tow a NEO to where it's needed, using the NEO itself as reaction mass. The low acceleration required for human trafficking (couldn't resist) and tools, electronics, and parts can be handled by an elevator, if it's proven that it can "rise above" fiction.