The Honda NSX, marketed as Acura NSX in North America, is a 2-seater, mid-engine sports car manufactured by Honda. The first-generation prototype debuted in 1989 at the Chicago Auto Show under the developmental code name NS-X, which represented "New", "Sportscar" and "eXperimental". The prototype's name was later adopted as the official name of the production model, with a slight change to NSX. The rear-wheel drive two-seater was the first car from Honda with an all-aluminium body. Powered by an all-aluminium V6 engine, it featured Honda's VTEC (Variable Valve Timing and Lift Electronic Control) system developed in the 1980s. The NSX was manufactured in Japan from 1990 to 2005 before being discontinued. In December 2011, Honda officially announced the second-generation NSX concept, which was unveiled the following month at the 2012 North American International Auto Show. The first production version was shown three years later at the 2015 North American International Auto Show. The all-wheel drive NSX hybrid features a twin-turbo V6 engine and several different computer-controlled drive mode operations. Unlike the first generation, the new NSX is manufactured in the United States.