Question: At which motor show was this luxury sedan/saloon first introduced, which shares the same platform with Bentley Continental Flying Spur?

Context paragraphs:
Lincoln Continental: The Lincoln Continental is a series of luxury cars produced by Lincoln, a division of the American automaker Ford Motor Company.  First introduced in 1939 as a coachbuilt convertible, which would spawn the personal luxury car segment, the nameplate has been in use by Lincoln at various times for more than 75 years.  In the Lincoln model line, the Continental has served various roles, ranging from the top-trim sedan to the base-trim sedan.  Through its production, the Lincoln Continental has been produced in several bodystyles, including two-door and four-door convertibles, two-door and four-door hardtops and sedans, and two-door coupes.  The Lincoln Continental is the final American car factory-produced as a four-door convertible or with a V12 engine.

Bentley Continental Flying Spur (2005): The Bentley Continental Flying Spur is the four-door saloon variant of the Bentley Continental GT coupé.  The Bentley Continental Flying Spur was introduced in 2005.  This car shares its platform with the Volkswagen Phaeton, and its powertrain components are related to those on the Audi A8 and S8.  It was designed by the same team as produced the Continental GT and Continental GTC.

Bentley Continental Flying Spur: Bentleys have worn the Continental Flying Spur name on two quite different classes of four-door car.

Bentley Continental GT: The Bentley Continental GT is a grand tourer produced by the British automaker Bentley Motors since 2003.  It was the first car released by Bentley under Volkswagen AG-management after their acquisition of the company in 1998, and the first ever Bentley to employ "mass production" manufacturing techniques.  It shares a platform with the Volkswagen Phaeton.

Volkswagen Phaeton: The Volkswagen Phaeton (   ) ("Typ" 3D) is a full-size (F-segment in Europe) luxury sedan/saloon manufactured by German automaker Volkswagen, described by Volkswagen as their "premium class" vehicle.  Introduced at the 2002 Geneva Motor Show, the Phaeton was marketed worldwide.  Sales in North America ended in 2006.  Sales globally ended in 2016.

Volkswagen Phideon: The Volkswagen Phideon () ("Typ" 3E) is a full-size luxury sedan/saloon manufactured by German automaker Volkswagen, described by Volkswagen as their "premium class" vehicle.  Introduced at the 2016 Geneva Motor Show, the Phideon is aimed at the Chinese market.

Volvo 164: The Volvo 164 is a 4-door, 6-cylinder luxury sedan unveiled by Volvo at the Paris Motor Show early in October 1968 and first sold as a 1969 model.  46,008 164s were built before the car was superseded by the 264 in 1975.  The 164 was Volvo's first venture into the luxury segment since the end of PV 60 production in 1950, and was the first six-cylinder Volvo since the PV800 last produced in 1958.

Sports sedan: A sports sedan or a sports saloon is a sedan automobile (US) or saloon car (UK) that is designed to look and feel "sporty", offering the motorist more connection with the driving experience, while providing the comfort and amenities expected of a luxury sedan.  A wider definition that includes related coupé, convertibles, crossovers is known as sport luxury.  Most vehicles in this category overlap with the compact executive car and executive car classifications, while the sporty small family sedans are called sport compacts (mostly used in North America).

Lincoln Continental Mark VII: The Continental Mark VII, later changed to Lincoln Mark VII, is a rear wheel drive luxury coupe that was produced by Lincoln.  Introduced in August 1983 for the 1984 model year, the Continental Mark VII shared its platform with the Ford Thunderbird, Mercury Cougar, and Lincoln Continental (the Ford Fox platform from the code name of the first program using the platform).  The Fox platform was originally introduced for the 1978 Ford Fairmont and Mercury Zephyr.  The same platform was also utilized as the base for the 1982 - 1987 Lincoln Continental sedan - the Mark VII's four-door companion.  Like its predecessor the Lincoln Continental Mark VI, the Mark VII was manufactured at the Wixom Assembly Plant in Wixom, Michigan through 1992.  It was replaced by the Lincoln Mark VIII in 1993.

Bentley Continental R: The Bentley Continental R was a luxury coupé made by Bentley from 1991 to 2003.  It was the first Bentley to feature a body not shared with a Rolls-Royce model since the S3 Continental of 1965, the first to use the GM 4L80-E transmission, and the fastest, most expensive, and most powerful Bentley of its day.  It was also the most expensive production car in the world at launch.  A convertible derivative, the Bentley Azure, was launched in 1995.

Supporting paragraphs: Bentley Continental Flying Spur (2005) Volkswagen Phaeton
Answer: 2002 Geneva Motor Show