A vehicle that may revolutionize travel and communications in Canada's trackless wilderness undergoes tests on the St. Lawrence River. A land and water bus that travels on a cushion of air, the 27-ton Hovercraft is visualized for oil explorations as it will travel over snow, ice, rivers, lakes and muskeg. St. Lawrence River Westland hovercraft sitting down in the grass. MS - The motor goes on and the hovercraft rises and start's to move along the long grass. CUS - Inside the hovercraft is the pilot and co-pilot driving the craft. Aerial shot - The hovercraft moving along the St. Lawrence River. CUS - Inside the cabin of the craft are a group of news paper men enjoying the ride. MS - The Hovercraft traveling over some rough water.