Question: Which top-selling luxury automobile was the body of Robert Donati found in?

full_context: Document 1: Robert Durst: Robert Alan Durst (born April 12, 1943) is an American real estate heir, the son of New York City mogul Seymour Durst, and the elder brother of Douglas Durst, head of the Durst Organization. He is primarily known for being suspected of foul play against three individuals in different states: Kathleen McCormack Durst, his first wife, who disappeared in New York in 1982; Susan Berman, his longtime friend, who was murdered in California in 2000; and his neighbor, Morris Black, who was murdered in Texas in 2001. Durst was the subject of a multi-state manhunt and was ultimately convicted of dismembering Black, but acquitted of his murder.
Document 2: William Grasso: William "Wild Guy" Grasso was an Italian-American gangster from East Haven, Connecticut who served as underboss to Raymond Patriarca, Jr. (a.k.a. "Junior") in the Patriarca crime family, also known as the New England crime family, the Providence crime family or the Boston crime family. The Patriarca family is a Mafia crime family based in New England. Succeeding his father Raymond L.S. Patriarca as boss after his father's death in 1984, Junior was considered a weak leader. He managed to keep the peace in his crime family due to the support of the Gambino crime family of New York. When Junior's original underboss Ilario "Larry Baione" Maria Antonio Zannino was sentenced to thirty years in prison in 1987, it further weakened Junior's position. With Zannino in jail, Grasso became underboss.
Document 3: Randy Roth: Randy Roth is a convicted murderer and thief from Washington. He was convicted of the 1991 murder of his fourth wife, Cynthia Baumgartner Roth. He was suspected but never tried for murdering his second wife, Janis Roth, in 1981. In both deaths he was the only witness, he claimed the activity that led to the death was the idea of his deceased wife, and the bodies were cremated as quickly as could be arranged. He was also convicted of stealing in the form of defrauding insurers and the Social Security Administration and was sentenced to one year for theft and 50 years for first degree murder in 1992. At least two true crime books are based on Roth's crimes, "A Rose for Her Grave" by Ann Rule and "Fatal Charm" by Carlton Smith.
Document 4: Chrysler: FCA US LLC (also called Fiat Chrysler or Chrysler) ( ) is the American subsidiary of Fiat Chrysler Automobiles N.V., an Italian controlled automobile manufacturer registered in the Netherlands with headquarters in London, U.K., for tax purposes. FCA US is one of the "Big Three" American automobile manufacturers. FCA US has its headquarters in Auburn Hills, Michigan and sells vehicles worldwide under its flagship Chrysler brand, as well as the Dodge, Jeep, and Ram Trucks. Other major divisions include Mopar, its automotive parts and accessories division, and SRT, its performance automobile division.
Document 5: LaSalle (automobile): LaSalle was an American brand of luxury automobiles manufactured and marketed by General Motors' Cadillac division from 1927 through 1940. Alfred P. Sloan developed the concept for LaSalle and certain other General Motors' marques in order to fill pricing gaps he perceived in the General Motors product portfolio. Sloan created LaSalle as a companion marque for Cadillac. LaSalle automobiles were manufactured by Cadillac, but were priced lower than Cadillac-branded automobiles and were marketed as the second-most prestigious marque in the General Motors portfolio.
Document 6: Robert Carey (gangster): Robert "Bob" Carey (August 25, 1894 – July 30, 1932) was a Midwestern armed robber and contract killer responsible for many crimes during the Prohibition era. He is considered a suspect in the infamous St. Valentine's Day Massacre of 1929.
Document 7: Cadillac: Cadillac , formally the Cadillac Motor Car Division, is a division of the U.S.-based General Motors (GM) that markets luxury vehicles worldwide. Its primary markets are the United States, Canada, and China, but Cadillac-branded vehicles are distributed in 34 additional markets worldwide. Historically, Cadillac automobiles have always held a place at the top of the luxury field within the United States. In 2016, Cadillac's U.S. sales were 170,006 vehicles and its global sales were 308,692 vehicles.
Document 8: GMC (automobile): GMC (General Motors Truck Company), formally the GMC Division of General Motors LLC, is a division of the American automobile manufacturer General Motors (GM) that primarily focuses on trucks and utility vehicles. GMC sells pickup and commercial trucks, buses, vans, military vehicles, and sport utility vehicles marketed worldwide by General Motors.
Document 9: Kray twins: Twin brothers Ronald "Ronnie" Kray (24 October 193317 March 1995) and Reginald "Reggie" Kray (24 October 19331 October 2000) were English gangsters who were the foremost perpetrators of organised crime in the East End of London during the 1950s and 1960s. With their gang, the Firm, the Krays were involved in armed robberies, arson, protection rackets, assaults and the murders of Jack "the Hat" McVitie and George Cornell.
Document 10: John D'Amato: John "Johnny Boy" D'Amato (died January 1992) was a New Jersey mobster and former acting boss of the DeCavalcante crime family. After being recruited by Gambino crime family boss John Gotti to take over the family, he was suspected of engaging in homosexual activity and was murdered in January 1992.
Document 11: Richard Kuklinski: Richard Leonard Kuklinski (April 11, 1935 – March 5, 2006) was an American contract killer and serial killer who was convicted of murdering five people, though he likely killed at least several dozen more. He was associated with members of the American Mafia, namely the DeCavalcante crime family of Newark, New Jersey, and the Five Families of New York City.
Document 12: Cadillac insurance plan: Informally, a Cadillac plan is any unusually expensive health insurance plan, usually arising in discussions of medical-cost control measures in the United States. The term derives from the Cadillac automobile, which has represented American luxury goods since its introduction in 1902, and as a health care metaphor dates to the 1970s. The term gained popularity in the early 1990s during the debate over the Clinton health care plan of 1993, and was also widespread during debate over possible excise taxes on "Cadillac" plans during the health care reforms proposed during the Obama administration. (Bills proposed by Clinton and Obama did not use the term "Cadillac".)
Document 13: Cadillac BLS: The Cadillac BLS is an entry-level luxury car marketed in Europe by Cadillac. Based on General Motors' Epsilon architecture, the BLS was a heavily restyled version of the Saab 9-3. The development was done by Saab and the car cost more than one billion kronor (approximately $140 million) to design. It was manufactured in Trollhättan, Sweden, alongside the Saab 9-3 and the Saab 9-5. Sales of the sedan began in March 2006, with a station wagon joining the line for 2007. The BLS was introduced to the Arabian, Mexican, South African, and South Korean markets for the 2007 model year.
Document 14: Robert Donati: Robert Donati (June 4, 1940 – c. September 21, 1991), who went by Bobby and was known by the nickname Bobby D, was an American career criminal associated with the New England-based Patriarca crime family, along with his twin brother Richard ("Dicky"). His criminal history dates to 1958, when he was 17; he and his brothers were long believed to be part of the Angiulo Brothers' crew, with whom they carried out burglaries. On September 24, 1991, three days after he had last been seen alive leaving his house in the Boston suburb of Revere, his body, bound, beaten and stabbed, was found in the trunk of his Cadillac a short distance away. The killing remains unsolved.
Document 15: General Motors: General Motors Company, commonly known as GM, is an American multinational corporation headquartered in Detroit, Michigan, that designs, manufactures, markets, and distributes vehicles and vehicle parts, and sells financial services. With global headquarters at the Renaissance Center in Detroit, Michigan, United States, GM manufactures cars and trucks in 35 countries. In 2008, 8.35 million GM cars and trucks were sold globally under various brands. GM reached the milestone of selling 10 million vehicles in 2016. Current auto brands are Buick, Cadillac, Chevrolet, GMC, Holden, and Wuling. Former GM automotive brands include McLaughlin, Oakland, Oldsmobile, Pontiac, Hummer, Saab, Saturn, as well as Vauxhall, and Opel, which were bought by Groupe PSA in 2017.
ground_truth: Cadillac