Adaptrac creates a system able to manage the pressure of your wheels directly on your bike. With Adaptrac and its cartridge of CO2, you can inflate or deflate the pressure of your tyres, without having to stop.
This is a system you can usually find on some monster cars such as Hummer on which you can adjust the pressure for the paths you drive. Hoses are guided through the hubs of the wheels.
Guys @Adaptrac decides to do the buzz with an incredible fatbike at last Sea Otter 2013. BikeRumor highlights the Zeppelin