paragraph_text: The Nissan Rogue is a compact crossover SUV produced by the Japanese automaker Nissan. It made its debut in October 2007 for the 2008 model year. The current model, the second generation launched in 2013, is the North American version of the Nissan X-Trail. It is currently Nissan's best - selling vehicle in the United States.

paragraph_text: The Acura EL is a subcompact executive car that was built at Honda's Alliston, Ontario, plant, and also the first Acura built in Canada. The EL is a badge-engineered Honda Civic with a higher level of features.

paragraph_text: BMW released the first iPod automobile interface, allowing drivers of newer BMW vehicles to control an iPod using either the built-in steering wheel controls or the radio head-unit buttons. Apple announced in 2005 that similar systems would be available for other vehicle brands, including Mercedes-Benz, Volvo, Nissan, Toyota, Alfa Romeo, Ferrari, Acura, Audi, Honda, Renault, Infiniti and Volkswagen. Scion offers standard iPod connectivity on all their cars.

paragraph_text: The Jonga was a Nissan designed vehicle used by the Indian Army. Jonga was an acronym for Jabalpur Ordnance aNd Guncarriage Assembly.

paragraph_text: The Scion bbX was first concept car to be revealed by Toyota for its daughter company, Scion. The concept was first shown at the New York International Auto Show in 2003. As shown at the motor show, the bbX is very similar to the design of the Scion xB, sold for two generations from 2003 to 2015.

paragraph_text: The Infiniti J30, or Nissan Leopard J Ferie in Japan, was a rear wheel drive luxury car. The J30 went into production on April 7, 1992 as a 1993 model to replace the M30 (which was a coupe), and was launched in the United States after its competitor, the Lexus GS. The car was designed to slot between the smaller G20 and the larger Q45, as Infiniti's first mid-size sedan to compete directly with the Acura Legend. Also, it was fairly small but featured rounded styling uncharacteristic of the crowded executive car class, that is now reminiscent of a four-door coupé. Chief designer for the J30 was Jerry Hirshberg, president of Nissan Design International (NDI) and exterior designer Doug Wilson in 1988-1989. Design work was frozen in 1989. In a promotional video produced in 1994, it was referred to as a "personal luxury sedan" as attempt to define it as a four-door coupé. It has the round looks of the Nissan Altima/Bluebird U13.

paragraph_text: The Scion xD is a five-door subcompact hatchback marketed in the U.S. and Canada by Japanese manufacturer Toyota beginning with the 2008 model year — replacing the xA. The Scion xD and the second generation xB were first shown to the public on February 8, 2007 at the Chicago Auto Show. The xD appeared in Scion showrooms in mid-2007 in the USA and in 2011 for Canada. The Scion xD was discontinued in 2014, and was succeeded by the Toyota C-HR in 2017.

paragraph_text: Some buyers lamented the small size of the first Japanese compacts, and both Toyota and Nissan (then known as Datsun) introduced larger cars such as the Toyota Corona Mark II, the Toyota Cressida, the Mazda 616 and Datsun 810, which added passenger space and amenities such as air conditioning, power steering, AM-FM radios, and even power windows and central locking without increasing the price of the vehicle. A decade after the 1973 oil crisis, Honda, Toyota and Nissan, affected by the 1981 voluntary export restraints, opened US assembly plants and established their luxury divisions (Acura, Lexus and Infiniti, respectively) to distinguish themselves from their mass-market brands.

paragraph_text: Norfolk Assembly was a Ford manufacturing plant that opened on April 20, 1925 on the Elizabeth River, near downtown Norfolk, Virginia -- closing in 2007.

paragraph_text: Seattle remained the corporate headquarters of Boeing until 2001, when the company separated its headquarters from its major production facilities; the headquarters were moved to Chicago. The Seattle area is still home to Boeing's Renton narrow-body plant (where the 707, 720, 727, and 757 were assembled, and the 737 is assembled today) and Everett wide-body plant (assembly plant for the 747, 767, 777, and 787). The company's credit union for employees, BECU, remains based in the Seattle area, though it is now open to all residents of Washington.

paragraph_text: Janesville Assembly Plant is a former automobile factory owned by General Motors located in Janesville, Wisconsin. Opened in 1919, it was the oldest operating GM plant when it was largely idled in December 2008, and ceased all remaining production on April 23, 2009. The demolition of the plant began in April 2018.

paragraph_text: By the early 1960s, the US had begun placing stiff import tariffs on certain vehicles. The so - called ``chicken tax ''of 1964 placed a 25% tax on imported light trucks. In response to the tariff, Toyota, Nissan Motor Co. and Honda Motor Co. began building plants in the US by the early 1980s.

paragraph_text: The first-generation Acura RL was a rebadged version of the third-generation Honda Legend, and was first introduced to the North American market in 1996, to replace the second-generation Acura Legend. The second-generation Acura RL was a rebadged version of the fourth-generation Honda Legend, introduced to the North American market in September 2004, as a 2005 model. This iteration of the RL received an extensive mid-generational facelift for the 2009 model year, and a further update for 2011. The third-generation debuted for the 2014 model year as the Acura RLX.

paragraph_text: The Scion xB is a compact car (subcompact car in its first generation) made by Toyota for the United States market and sold under their youth-oriented Scion brand. It is a box-shaped, 5-door hatchback.

paragraph_text: The Mercedes-Benz T2 was a transporter manufactured by Daimler-Benz. The T2 is also known as the "Düsseldorf transporter", since it was built in Düsseldorf from 1967 on. The third series, built from 1996 at Ludwigsfelde, was branded the Mercedes-Benz Vario. Some T2s were assembled by Mercedes-Benz España in their Alcobendas assembly plant.

paragraph_text: Datsun (, ) is an automobile brand owned by Nissan. Datsun's original production run began in 1931. From 1958 to 1986, only vehicles exported by Nissan were identified as Datsun. By 1986 Nissan had phased out the Datsun name, but re-launched it in June 2013 as the brand for low-cost vehicles manufactured for emerging markets.

paragraph_text: The Infiniti Kuraza is a concept car designed by Nissan, under the Infiniti brand at the Nissan Technical Center in Atsugi, Japan, headed by product design director Kojii Nagano. It made its world debut in Detroit, at the 2005 North American International Auto Show. The Infiniti Kuraza ultimately never made it to production.

paragraph_text: The Acura Legend is a mid-size luxury/executive car manufactured by Honda. It was sold in the U.S., Canada, and parts of China under Honda's luxury brand, Acura, from 1985 to 1995, as both a sedan, which was classified as a full-size car, and a coupe, which was classified as a mid-size car (similar to how the Honda Accord is set up today). It was the first flagship sedan sold under the Acura nameplate, until being renamed in 1996 as the Acura 3.5RL. The 3.5RL was the North American version of the KA9 series Honda Legend.

paragraph_text: The Acura RLX is a full-size luxury sedan manufactured by Honda and sold under their Acura division, released in 2013. Succeeding the Acura RL, the RLX offers two versions, a front-wheel drive base model equipped with Acura's Precision All-Wheel Steer (P-AWS) four-wheel steering system, and a hybrid variant featuring SH-AWD that serves as Acura's flagship. The JDM version, the Honda Legend, is only offered with the SH-AWD powertrain.

paragraph_text: The Acura RL is a mid-sized / executive luxury car that was manufactured by the Acura division of Honda for the 1996–2012 model years over two generations. The RL was the flagship of the marque, having succeeded the Acura Legend, and was replaced in 2013 by the Acura RLX. All models of the Legend, RL and RLX lines have been adapted from the Japanese domestic market Honda Legend. The model name "RL" is an abbreviation for "Refined Luxury."

Question: When did the maker of the Acura Legend, the manufacturer of the Scion xB, and Nissan, open US assembly plants?
Answer: 1981