It was commissioned about 9 months ago IIRC. It's pretty trick. If any of you all get up this way I can probably give you a tour and show it to you. At least I can until I get my promotion to a position at Kenworth Division Engineering.
FWIW, it's a climatic wind tunnel, not an aerodynamic wind tunnel. They can do smoke viz and do the yarn tufts to visualize airflow, but the test chamber is much too small to do proper aerodynamic testing on a full size truck.
