Resilient Technologies and the University of Wisconsin–Madison's Polymer Engineering Center are creating a "non-pneumatic tire", which is basically a round polymeric honeycomb wrapped with a thick, black tread. The initial version of the tire is for the Humvee and is expected to be available in 2012. Resilient Technologies airless tires have been tested and are used by the U.S. Army. It is also the first group to make a commercially available mass-produced airless tire after its acquisition by Polaris, albeit only as coupled with their vehicle. The tire trademark is "Terrainarmor".