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.
IAV IAV GmbH (German: Ingenieurgesellschaft Auto und Verkehr , literal "Engineer Society Automobil and Traffic"), abbreviated to IAV, is an engineering company in the automotive industry, designing products for powertrain, electronics and vehicle development. Founded in Berlin in 1983 by Prof. Dr. Hermann Appel as a university-affiliated research institute, the company employs over 5,000 members of staff, and supplies automobile manufacturers and component suppliers. In addition to development centres in Berlin, Chemnitz and Gifhorn, IAV operates at sites in France, United Kingdom, Italy, Russia, China, India, Japan, South Korea, Brazil, Mexico and the United States.