Roomba

The Roomba is a device in one of the apartments. If interacted with, Niko can ride it until they attempt to leave the room. Riding on it unlocks the Steam Achievement "We Ride At Dawn", bearing the description "Nyooooom".
If Niko rides the roomba in OneShot: World Machine Edition, the song "IT'S TIME TO FIGHT CRIME" (titled "IT'S TIME TO FIGHT GRIME" in the World Machine Edition's Music Box) plays.https://youtu.be/SW34cFWFRKE?t=943
(Timestamp for roomba: 15:43)