In which city is the headquarters of the manufacturer of the engine used in the 1997 Rinspeed Mono Ego?
Hyundai Hyundai Group (Hangul:  ; Hanja:  , ] ) is a multinational chaebol (conglomerate) headquartered in Seoul, South Korea. It was founded by Chung Ju-yung in 1947 as a construction firm and Chung was directly in control of the company until his death in 2001.
Martin Motors Martin Motors is an Italian company headquartered in the Quinto Stampi district of Milan. It was established by Giuseppe Martinelli, to manufacture automobiles, buses and commercial vehicles. The manufacturer's assembly plant is located in Tunisia.