you gotta be kidding me...... when dude did that grind on the rail with his atv... jesus... i bet this could be the next winter x games... ive driven a quad on similar surfaces.. ill bet they have the same tire studs i have in my trailboss on them... and even still its hard to steer... but a course of freestyle winter quadcross would be nuts.... i surprized this isnt a x games already... even racing on the snowmobile track?