Question: Which North Carolina city is nicknamed "Camel City" after the local cigarette brand, formerly a big supporter of GT and other auto racing?

Context paragraphs:
Camel News Caravan: The Camel News Caravan or Camel Caravan of News was a 15-minute American television news program aired by NBC News from February 14, 1949 to October 26, 1956.  Sponsored by the Camel cigarette brand and anchored by John Cameron Swayze, it was the first NBC news program to use NBC filmed news stories rather than movie newsreels.  On February 16, 1954, the "Camel News Caravan" became the first news program broadcast in color, making use of 16mm color film.  In early 1955, the R.J. Reynolds Tobacco Company, maker of Camel cigarettes, cut back its sponsorship to three days a week.  Chrysler's Plymouth division sponsored the other days, and on those days, the program was labelled the "Plymouth News Caravan".  The program featured a young Washington correspondent named David Brinkley, and competed against "Douglas Edwards with the News" on rival CBS.  With greater resources, the "News Caravan" attracted a larger audience than its CBS competition until 1955.

1973 IMSA GT Championship: The 1973 Camel GT season was the 3rd season of the IMSA GT Championship auto racing series.  It was for Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as former Trans Am Series cars in the TO and TU classes.  It began March 24, 1973, and ended November 25, 1973, after ten rounds.  This year marked the decline of Trans Am and the beginning of it and IMSA GT becoming nigh indistinguishable.

1974 IMSA GT Championship: The 1974 Camel GT Challenge season was the 4th season of the IMSA GT Championship auto racing series.  The series was for GTO and GTU class Grand tourer racing cars.  It began April 21, 1974, and ended December 1, 1974, after twelve rounds.  1974 would be the first time that the series would leave the United States, with races in Canada and Mexico.  It would also be the only time IMSA GT would leave northern North America (i.e. the United States and Canada).  The TO and TU classes, which had been composed of former Trans Am Series cars from before the championship's debut, were dropped due to Trans Am having been "absorbed" by IMSA GT and thus becoming nigh indistinguishable from IMSA.

Camel (cigarette): Camel is a brand of cigarettes that was introduced by American company R.J. Reynolds Tobacco in 1913.  Most current Camel cigarettes contain a blend of Turkish tobacco and Virginia tobacco.  Winston-Salem, North Carolina, the city where R.J. Reynolds was founded, is nicknamed "Camel City" because of the brand's popularity.

1992 IMSA GT Championship: The 1992 Camel GT Championship and Exxon Supreme GT Series seasons were the 22nd season of the IMSA GT Championship auto racing series.  It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTS, GTO, and GTU classes.  It began February 1, 1992, and ended October 11, 1992, after fifteen rounds.

Saat (cigarette): Saat cigarettes are produced by AKJ Marketing (Malaysia) Sdn Bhd.  It is the largest local cigarette brand in Malaysia.

1984 IMSA GT Championship: The 1984 Camel GT Championship season was the 14th season of the IMSA GT Championship auto racing series.  It was for GTP class prototypes and GTO and GTU class Grand Tourer-style racing cars.  It began February 4, 1984, and ended November 25, 1984, after seventeen rounds.

1991 IMSA GT Championship: The 1991 Camel GT Championship and Exxon Supreme GT Series seasons were the 21st season of the IMSA GT Championship auto racing series.  It was for GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as a tube-frame All-American Challenge (AAC) class during select rounds.  It began February 2, 1991, and ended October 13, 1991, after nineteen rounds.

Pyramid (cigarette): Pyramid is a cigarette brand manufactured by Liggett Group, based in Mebane, North Carolina.  Pyramid was introduced in 1988 as the first "branded discount" cigarette.  It is available in 11 versions as of February 2006.

1993 IMSA GT Championship: The 1993 Camel GT Championship and Exxon Supreme GT Championship seasons were the 23rd season of the IMSA GT Championship auto racing series.  It was the final year of the Camel GTP and Camel Lights prototype categories before they were replaced with the World Sports Car (WSC) class of prototypes the following year.  WSC class cars were allowed to participate, but did not score points toward any championships.  Grand Tourer-style racing cars were also raced and ran in the GTS, GTO, and GTU classes.  An Invitiational GT class was also used for cars which did not comply with IMSA's regulations.  It began January 30, 1993, and ended October 3, 1993, after eleven rounds.

Supporting paragraphs: 1992 IMSA GT Championship Camel (cigarette)
Answer: Winston-Salem