The injuries were not limited to those riding snowmobiles, other recreationalists in the same area were also at risk for injury. Severe snowmobile injuries repeatedly include internal organ damage, bone fractures, spinal chord severing, and deep tissue lacerations, avulsions, and bruises. Many of these wounds take months or years to heal. And for the people killed every winter in snowmobile accidents, recovery will never take place. Automobiles cause just as much, or more, pollution than snowmobiles do.
Snowmobiles cause far more pollution than automobiles do.
Two-stroke engines power nearly all snowmobiles. Furthermore, new EPA and CARB regulations have reduced pollution on new automobiles even more, creating an even larger gap between two-stroke snowmobiles and the much cleaner automobiles. At Old Faithful, every weekend of snowmobile traffic produces a year's worth of park-wide automobile pollution. According to industry statistics, snowmobiles discharge 1,000 times more CO than automobiles. Snowmobiling is a safe sport.