Snogo Snow Blower - Credit: Wikimedia Commons
The Snogo Snow Blower was used on the Trail Ridge Road in Rocky Mountain National Park, United States. Manufactured in 1932 by the Klauer Engineering Company of Dubuque, Iowa, the plow was actually a snowblower and featured advanced features such as an enclosed cab, four wheel drive and roll-up windows. It was used in the park until 1952. Read more on Wikipedia
Source: en.wikipedia.org