Answer:
By definition, NASCAR is a sport.
Sport -noun
An athletic activity requiring skill or physical prowess and often of a competitive nature, as racing, baseball, tennis, golf, bowling, wrestling, boxing, hunting, fishing, etc.
Well, this is the definition of a sport. The three primary parts of this entry are the following:
-An athletic activity
-Requires skill or physical prowess
-Of a competitive nature.
NASCAR is certainly of a competitive nature, so let's cross that off the list.
-Of a competitive nature.
NASCAR requires perfect car control. That is a skill. Again, very competitive. Let's cross that off.
-Requires skill
-Of a competitive nature.
NASCAR requires physical prowess because of the following: It is endurance, as sitting in that car is over 120 degrees while controlling it.
-An athletic activity
-Requires skill
-Of a competitive nature.
This is not opinion. This is definition.
Edit: AMEN