The Cosmic Treadmill is a block that can be used by speedsters to increase their speed XP.
The treadmill is run by alternating between pressing "A" and "D" when the bar at the top of the interface reaches the orange area. Each successful streak will raise the yellow bar at the top of the interface by one, and per succession will add one bar to the user's speed XP. The streak required to gain speed XP will be increased by 1 per level.
The treadmill is 2 blocks wide and 3/16 blocks tall.