When snow hits and roads become impassible, it's time to break out the snow vehicles that add an extreme element to winter. Readers learn about the awesome technology behind snow busters, snowmobiles, snow cats, plows, and more, discovering how these machines are engineered to operate in extreme weather circumstances. Readers see how cities, towns, ski resorts, and even the military deploy extreme snow vehicles to get their jobs done, and also how these machines help us have fun.