An organization rooted in 20th century car culture is joining 21st century smartphone culture. AAA has introduced a free iPhone application, AAA Discounts, which uses GPS technology to instantly identify nearby businesses offering deals for AAA members. AAA, which has more than 51 million members, is best-known for providing roadside help when your car breaks down. However, most members know the card can also be used for discounts. If you’re like me, though, it’s too much trouble to plan travel based on where discounts are offered.