Nascar doesn't involve any direct movement from the participant...only steering. Also there isn't any two teams competing, everyone is competing at the same time. It is also a race not a sport with goals or end zones.
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It relies on a crew chief and a team of mechanics/pit crew to set up the car and work on it during the race. Each driver also has a spotter whose communication with the driver is crucial to avoid wrecking. And then, of course, there's the driver. A single mistake by any of these team members during a race could result in a bad result. It's certainly a team sport.