course Circuit Gilles Villeneuve. In 2013, the Truck Series began racing at Canadian Tire Motorsports Park, marking the first time in 13 years the Truck Series visited a road course. Due to the popularity of these races, NASCAR has been adding more road courses to the championship season schedule with races also taking place in rain. In 2021, the Cup Series schedule included seven road courses, with such tracks comprising approximately 19 percent of the calendar compared to eight percent in the past. Manipulating the outcome of races and championships NASCAR uses caution flags, triggered by race administrators, in which drivers are limited to certain maneuvers. The general purpose of this event is to reduce risk when track conditions deteriorate (for instance, if there is debris on the track, one or more cars crash and emergency vehicles and tow trucks need to be on track, or a car spins and is given the opportunity to catch up with the field). Generally, when a caution occurs, race cars must tightly pack before a restart. The number of cautions per race in the NASCAR Cup Series increased from 7.4 in 2001 to 9.6 in 2007 (an increase of almost 30%), while the number of actual crashes per race has only increased from 5.6 to 6.7 (an increase of about 20%). This is likely due to increased caution periods for cleaning debris from the track. In 2015, the number of cautions per race averaged at 8.2, showing a gradual decline since then. Fans and competitors alike speculate whether some of these cautions are used to keep the cars tightly packed in an effort to keep a race close. An unnecessary caution at a specific time could affect a driver's strategy and the outcome of the race, while providing a potential opportunity for other drivers to close the gap and prevent a runaway victory. In April 2007, then two-time champion Tony Stewart, on his radio show hosted via Sirius Satellite Radio, said: "It's like playing God. They can almost dictate the race instead of the drivers doing it… I don't know that they've run a fair race all year." Stewart also made a comparison to the WWE, which is scripted. NASCAR itself was not flattered by these comments, and stated that Stewart's comments were "very, very disappointing" but did not punish Tony Stewart, as there were no rules against criticizing the officiating of a