She recognizes the program on the television as the same home shopping network that she used to obtain what she needed to install the expansion system. It seems that they are now advertising a replacement for a gas cartridge, which advertises that it makes it possible for the robot using it to be able to expand without needing a source.

Within seconds, Roll is on the phone, in the process of ordering the sourceless expansion cartridge. "Yeah, and rush it over, too! I need it ASAP!" she exclaims, holding the phone in one hand while gleefully flapping the other one.

Like in a cartoon, the cartridge is delivered to the lab. Roll quickly answers the door and grabs the box the cartridge is in. She happily tears it open and holds up her prize.

-----

"Aww, it's not really sourceless, but...it seems to work by absorbing the air nearby, so it might as well be sourceless." Roll says as she reads over the instructions after installing the cartridge. Now, all I have to do is activate it and let the cartridge do the rest..." she says, as she turns the cartridge on for the first time.