Freefall in color by many folks.
Sam: Humans don't need that many nuclear pulse devices.
Rover17: We can build storage vaults. With the proper choice of materials, we can make devices that will store for hundreds of thousands of years.
Sam: Hundreds of thousands of years. Humans may have moved on by then. If other robots build storage...that would leave developing races to find these vaults of the ancients. You know what we must do?
Sam: We must ensure that every one of these vaults has my biography in it!