A2 wind tunnel, Wind tunnel facility in Mooresville, North Carolina, US.

A2 Wind Tunnel is a full-scale, general-purpose open-return wind tunnel in Mooresville, North Carolina, built by Gary Eaker in 2006. Its open-return layout draws air through a large circuit so that whole cars, motorcycles and bicycles can be mounted and run in a controlled airstream.

A2 Wind Tunnel was created in 2006 by Gary Eaker in Mooresville, North Carolina. It is a full-scale, general-purpose open-return tunnel built to test complete cars, motorcycles and bicycles rather than scale models. Its client list later came to include the U.S. bobsled team that won gold at the 2010 Winter Olympics with "NightTrain".

A2 Wind Tunnel has hosted testing for Lance Armstrong, Kristin Armstrong and the U.S. bobsled team that won gold at the 2010 Winter Olympics with "NightTrain." The band Saving Abel filmed the video for Drowning (Face Down) there in 2009, and a Dale Earnhardt documentary was also shot on site.

A2 Wind Tunnel is an open-return tunnel, so air is drawn in from outside and expelled again during a run. Testing is arranged with the facility in advance rather than through walk-in visits; the tunnel handles full-scale cars, motorcycles and bicycles.

The tunnel records multiple force measurements including lift, downforce, drag, side forces, yaw, pitch, and roll for comprehensive analysis.