Amazon.com description: Product Description: When snow hits and roads become impassible, its 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. The text is accompanied by sidebars and fact boxes, which add fun facts and high-interest, supplementary information to the main content. Colorful photographs show these extreme vehicles in action.