The model origin of second gen. Honda/ Acura NSX is USA, Japan only developed engine and transmission

Development of the engine, hybrid system and transmission would be done at Honda's Automobile R&D Center facility in Tochigi, Japan, while development of the rest of the vehicle was concentrated at the Honda R&D Americas development center in Ohio, United States.

https://www.imcdb.org/search.php?resultsStyle=asList&sortBy=0&make=Acura&model=N- C1
https://www.imcdb.org/search.php?resultsStyle=asList&sortBy=0&make=Honda&model=N- C1
https://www.imcdb.org/vehicle_893014-Acura-NSX-Concept-2012.html
https://www.imcdb.org/vehicle_525885-Acura-NSX-Roadster-Concept-2012.html