Baby you can drive my car, but not to Piedmont Park. Sir Paul McCartney is performing in Atlanta’s Piedmont Park today, as part of the its 20th anniversary. This will be McCartney’s first outdoor concert in over 40 years, and it’ll be a “green” one. That is, there’ll be no parking for the event. MARTA trains will be one way to get there, but this still involves walking. Music starts at 7pm local time.