Howdy DPRG Following on from Saturday's DPRG panel discussion on outdoor rovers on various surfaces like dirt, concrete, grass, gravel, and snow! http://www.geology.smu.edu/dpa-www/robo/jbot/jbot-snow-01.JPG http://www.geology.smu.edu/dpa-www/robo/jbot/jbot-snow-02.JPG stay safe, David