 Each car is required to display a series of around 30 NASCAR sponsor decals just to the left of each door and on the front fenders.These contingency decals represent series sponsors and bonus money teams are eligible to earn during the race, but may be omitted in the event in which they conflict with the team's sponsors or moral beliefs.The series sponsor's logo is displayed on top of the windshield, called the windshield header or windshield banner.