Interplanetary acceleration track
From apm
(TODO: add a minimal definition)
To either send off or catch spacecraft with orbital velocities instead of contact-less electromagnetic interaction with advanced atomically precise technology it might be possible to use infinitesimal shearing drives with higher performance and efficiency.
Swing by maneuvers could be used as an exotic form of energy if one accepts permanently disposing orbital momentum of the solar system (and its associated mass) into interstellar space. Related: Energy extraction
Note that the involved speeds here frequently exceed the fundamental unsupported rotating ring speed limit of about 3000 meter per second.