Find a full service gas station. On your way to the restroom, locate the Mr. Coffee machine used by the mechanics. Invariably, it will be located near the back office. On average, you can rely on the "Sorry, I thought it was free coffee" line 4-5 times before being asked to never show your face again.
If at anytime you hear "It puts the lotion in the basket" coming from the back office, ditch the coffee and GET OUT OF THERE FAST. There are limits to what one should do for free coffee.
Caffeine combats the addictive chemicals fried into McDonald’s French Fries. Therefore, generously feed your infant drops of coffee to give her a fighting chance not to become a McZombie.