NASCAR Racing: NASCAR Statistics, brooklyn michigan, nascar fans

Question
We are preparing for a special day at church for Father's day.  I have several questions.
Can you tell me:
The number of NASCAR fans?
The $ spent on advertising?
The $ spent on fans?
Cost of the cars?
# of races to date?
Is there a race this weekend?  If so, where and when?
The meaning of the flags / colors?

Answers to any or all of these questions will be helpful...ASAP

Thanks.  

Answer
OK, here goes:

Number of NASCAR Fans: estimated 75 million fans

$ spent on advertising: I'm guessing you mean for sponsoring a car? If so, $10-$20 million for a primary sponsor, $500,000-$1,000,000 for an associate sponsor

$ spent on fans: don't know what you're after here Spent BY fans? estimated $1.5-$2 billion

Cost of the cars: From the ground up about $125,000.00

# of races to date: 14 points races

Race this weekend: Brooklyn, Michigan, Sunday at 1:30 eastern

Flags:
Green: go, race
Yellow: caution,
Blue with yellow stripe: Move over and allow a faster car to pass
Red: stop
Black, penalty, go to pit road
White: last lap
Checkers: winner, end of the race