[Inspired by misreading Rod Tiger's Bicycular Trucks]
Can't ride your bicycle through that muddy battlefield ? Well you need bicycle tank tracks for extra traction.-- lubbit, Jun 26 2001 (?) Bicycular Trucks http://www.halfbake.../Bicycular_20Trucks [lubbit, Jun 26 2001, last modified Oct 04 2004] Going round corners might be a problem.-- Gordon Comstock, Jun 28 2001 Apparently bicycles with a track in back and a ski (or skiis) in front have been proposed for snow travel--patented in Canada but I don't know if they were ever manufactured. *tries to imagine prehensile wheels, sees vision of toroidal squid*-- Dog Ed, Jun 28 2001 The Iditabike snow race has inspired the production of extra wide rims and tyres that actually work. Originally, people glued 2 rims together, but now they are extruded in extra wide form. Bike are steered by balancing and balanced by steering. Without quick steering of the front wheel, you fall over.-- MichaelW, Feb 04 2002 Dramatically wider tires, lower gearing might be an easier solution. See http://www.burrobikes.com/ for a concept in this direction.-- jgarrish, Aug 29 2002 There are two wheel drive bikes that might help too.-- macrumpton, Jun 20 2004 random, halfbakery