Question: Where are NASCAR races held in the city that shares a county with Helvetia?

Knowledge 1: Helvetia, Arizona
Helvetia is a populated place in Pima County, Arizona, that was settled in 1891 and abandoned in the early 1920s. Helvetia is an ancient name for Switzerland. [SEP] Knowledge 2: Pima County Natural Resources, Parks and Recreation
Pima County Natural Resources, Parks and Recreation is the agency within Pima County, Arizona that manages the natural resources, parks, and recreation offerings within Pima County including Tucson, AZ. [SEP] Knowledge 3: Tucson, Arizona
Tracks include Tucson Raceway Park and Rillito Downs. Tucson Raceway Park hosts NASCAR-sanctioned auto racing events and is one of only two asphalt short tracks in Arizona. Rillito Downs is an in-town destination on weekends in January and February each year. This historic track held the first organized quarter horse races in the world, and they are still racing there. The racetrack is threatened by development. The Moltacqua racetrack, was another historic horse racetrack located on what is now Sabino Canyon Road and Vactor Ranch Trail, but it no longer exists.
Knowledge 1: Pima County Natural Resources, Parks and Recreation
Pima County Natural Resources, Parks and Recreation is the agency within Pima County, Arizona that manages the natural resources, parks, and recreation offerings within Pima County including Tucson, AZ. [SEP] Knowledge 2: Tucson, Arizona
Tracks include Tucson Raceway Park and Rillito Downs. Tucson Raceway Park hosts NASCAR-sanctioned auto racing events and is one of only two asphalt short tracks in Arizona. Rillito Downs is an in-town destination on weekends in January and February each year. This historic track held the first organized quarter horse races in the world, and they are still racing there. The racetrack is threatened by development. The Moltacqua racetrack, was another historic horse racetrack located on what is now Sabino Canyon Road and Vactor Ranch Trail, but it no longer exists. [SEP] Knowledge 3: Helvetia, Arizona
Helvetia is a populated place in Pima County, Arizona, that was settled in 1891 and abandoned in the early 1920s. Helvetia is an ancient name for Switzerland.
Knowledge 1: Pima County Natural Resources, Parks and Recreation
Pima County Natural Resources, Parks and Recreation is the agency within Pima County, Arizona that manages the natural resources, parks, and recreation offerings within Pima County including Tucson, AZ. [SEP] Knowledge 2: Tucson, Arizona
Tracks include Tucson Raceway Park and Rillito Downs. Tucson Raceway Park hosts NASCAR-sanctioned auto racing events and is one of only two asphalt short tracks in Arizona. Rillito Downs is an in-town destination on weekends in January and February each year. This historic track held the first organized quarter horse races in the world, and they are still racing there. The racetrack is threatened by development. The Moltacqua racetrack, was another historic horse racetrack located on what is now Sabino Canyon Road and Vactor Ranch Trail, but it no longer exists. [SEP] Knowledge 3: Exhibition game
Various auto racing organizations hold exhibition events; these events usually award no championship points to participants, but they do offer prize money to participants. The NASCAR Sprint Cup Series holds two exhibition events annually - the Sprint Unlimited, held at Daytona International Speedway at the start of the season, and the NASCAR Sprint All-Star Race, held at Charlotte Motor Speedway midway through the season. Both events carry a hefty purse of over USD $1,000,000. NASCAR has also held exhibition races at Suzuka Circuit and Twin Ring Motegi in Japan and Calder Park Thunderdome in Australia.

Answer: Tucson Raceway Park