Daimler AG (] ) is a German multinational automotive corporation.
 Daimler AG is headquartered in Stuttgart, Baden-Württemberg, Germany.
 As of 2014, Daimler owns or has shares in a number of car, bus, truck and motorcycle brands including Mercedes-Benz, Mercedes-AMG, Smart Automobile, Detroit Diesel, Freightliner, Western Star, Thomas Built Buses, Setra, BharatBenz, Mitsubishi Fuso, MV Agusta as well as shares in Denza, KAMAZ, Beijing Automotive Group.
 The luxury Maybach brand was terminated at the end of 2012, but revived in April 2015 as "Mercedes-Maybach" versions of the Mercedes-Benz S-Class and G-Class.
 In 2016 Daimler sold 3.0 million vehicles.
 By unit sales, Daimler is the thirteenth-largest car manufacturer and is the largest truck manufacturer in the world.
 In addition to automobiles, Daimler manufactures buses and provides financial services through its Daimler Financial Services arm.
 The company is a component of the Euro Stoxx 50 stock market index.
Toyota Motor Corporation (Japanese: トヨタ自動車株式会社 , Hepburn: Toyota Jidōsha KK ) is a Japanese multinational automotive manufacturer headquartered in Toyota, Aichi, Japan.
 In March 2014, Toyota's corporate structure consisted of 338,875 employees worldwide and, as of 2016 , was the ninth-largest company in the world by revenue.
 As of 2016, Toyota is the world's largest automotive manufacturer.
 Toyota was the world's first automobile manufacturer to produce more than 10 million vehicles per year which it has done since 2012, when it also reported the production of its 200-millionth vehicle.
 s of 2014 , Toyota was the largest listed company in Japan by market capitalization (worth more than twice as much as #2-ranked SoftBank) and by revenue.
Mitsubishi Motors Corporation (Japanese: 三菱自動車工業株式会社 , Hepburn: Mitsubishi Jidōsha Kōgyō KK ) is a Japanese multinational automotive manufacturer headquartered in Minato, Tokyo, Japan.
 In 2011, Mitsubishi Motors was the sixth biggest Japanese automaker and the sixteenth biggest worldwide by production.
 From October 2016 onwards, Mitsubishi is one-third (34%) owned by Nissan, and thus a part of the Renault–Nissan–Mitsubishi Alliance.
The Federal Motor Truck Company was an American truck manufacturer headquartered in Detroit, Michigan.
 The company was founded in 1910 as Bailey Motor Truck by Martin L. Pulcher, who would later found the Oakland Motor Car Company.
 The last Federal vehicle made for the US marketplace was made in 1959.
China National Heavy Duty Truck Group Co., Ltd., CNHTC or Sinotruk Group is a Chinese state-owned truck manufacturer headquartered in Jinan, Shandong province.
 It is currently the third largest truck manufacturer in Mainland China.
 It is famous for developing and manufacturing the first heavy duty truck - "Huanghe" (黄河, lit. "
Yellow River") JN150 in China.
Shaanxi Automobile Group Co., Ltd. is a Chinese bus and truck manufacturer headquartered in Xi'an, Shaanxi.
 It employs around 23,000 employees.
 It manufactures heavy duty truck, buses (chassis), medium-size heavy truck and heavy duty axles for trucks.
 It utilizes Magna Steyr and MAN SE technologies.
 Its bus chassis are sold under the Eurostar Bus brand.
MTU Friedrichshafen GmbH is a manufacturer of commercial internal combustion engines founded by Wilhelm Maybach and his son Karl Maybach in 1909.
 Wilhelm Maybach was the technical director of Daimler-Motoren-Gesellschaft (DMG), a predecessor company of the German multinational automotive corporation Daimler AG, until he left in 1907.
 On 23 March 1909, he founded the new company, Luftfahrzeug-Motorenbau GmbH (Aircraft Engine Manufacturing Corp), with his son Karl Maybach as director.
 A few years later the company was renamed to Maybach-Motorenbau GmbH (Maybach Engine Manufacturing Corp), which originally developed and manufactured diesel and petrol engines for Zeppelins, and then railcars.
 The Maybach Mb.IVa was used in aircraft and airships of World War I.
Western Star Trucks Sales, Inc., commonly designated Western Star, is an American truck manufacturer headquartered in Portland, Oregon, United States and a subsidiary of Daimler Trucks North America, in turn a wholly owned subsidiary of the German Daimler AG.
The Hyundai Motor Company (Hangul: 현대자동차 ; Hanja: 現代自動車 ; RR: "Hyeondae Jadongcha "   ; Hangul: 현대 ; Hanja: 現代 ; MR: "Hyŏndae " , ] , "modernity"; ) is a South Korean multinational automotive manufacturer headquartered in Seoul, South Korea.
 The company was founded in 1967 and, along with its 32.8% owned subsidiary, Kia Motors, and its 100% owned luxury subsidiary Genesis Motors which together comprise the Hyundai Motor Group.
 It is the third largest vehicle manufacturer in the world.
Volkswagen AG (] ), known internationally as Volkswagen Group, is a German multinational automotive manufacturing company headquartered in Wolfsburg, Lower Saxony, Germany.
 It designs, manufactures and distributes passenger and commercial vehicles, motorcycles, engines, and turbomachinery and offers related services including financing, leasing and fleet management.
 In 2016, it was the world's largest automaker by sales, overtaking Toyota.
 It has maintained the largest market share in Europe for over two decades.
 It ranked seventh in the 2016 Fortune Global 500 list of the world's largest companies.

Question: What truck manufacturer headquartered in Portland, Oregon is owned by a German multinational automotive corporation
Answer: Western Star Trucks