Well it looks like High-Mobility Vehicles are really popular with the NXT.
![](http://cache.lego.com/media/nxtlog/ca8f905a-9833-444a-82f0-b4347d96c0f5/DSC01529.JPG)
This robot, dubbed NXT#5, was just posted on NXTLog. It also uses the SnowMobile Treads, and is apparently very powerful. It also uses the RC motors.
You can find more info on it at:
http://mindstorms.lego.com/nxtlog/ProjectDisplay.aspx?id=cf025bd7-15b5-418d-b1c8-5b3631b2bdab
![](http://cache.lego.com/media/nxtlog/f5257c2a-50ef-493a-b6bc-6b8f1344a716/DSCN2560.JPG)
http://mindstorms.lego.com/nxtlog/ProjectDisplay.aspx?id=9a96f08b-2c9f-44a4-b3a0-f610cf566dae
Richard
This robot, dubbed NXT#5, was just posted on NXTLog. It also uses the SnowMobile Treads, and is apparently very powerful. It also uses the RC motors.
You can find more info on it at:
http://mindstorms.lego.com/nxtlog/ProjectDisplay.aspx?id=cf025bd7-15b5-418d-b1c8-5b3631b2bdab
This robot uses Tonka Treads as treads. It has a very interesting shape but very little description.
http://mindstorms.lego.com/nxtlog/ProjectDisplay.aspx?id=9a96f08b-2c9f-44a4-b3a0-f610cf566dae
Richard