General Motors has demonstrated the most powerful and largest wind tunnel
US giant General Motors showed the world his main creation, in which testing of new products.
Here is a huge tunnel, in fact is a powerful automotive wind tunnel, which is equipped with fan blades with a diameter of 43 feet (13 m 1). Fan blades can be blown with air stream at 130 miles / hour (208 km / h). The blades are made of laminated spruce. The event was timed to coincide with the thirtieth anniversary of Aerodynamics Laboratory of General Motors, located in Warren, Michigan, USA. To date, this object is unique and the most powerful on the planet.