How much did U.S. corporations spend on auto racing sponsorships in 2006?

• about $500 million
  Amazingly, American corporations spent about $2.9 billion on sponsorship in 2006, with the lion's share of this cash going to NASCAR. More Fortune 500 companies are affiliated with NASCAR than with any other sport.
• about $3 billion
  Amazingly, American corporations spent about $2.9 billion on sponsorship in 2006, with the lion's share of this cash going to NASCAR. More Fortune 500 companies are affiliated with NASCAR than with any other sport.
• about $6 billion
  Amazingly, American corporations spent about $2.9 billion on sponsorship in 2006, with the lion's share of this cash going to NASCAR. More Fortune 500 companies are affiliated with NASCAR than with any other sport.