DOMINATING Atlanta’s thriving car-modding scene has come easy for one man and his Joker-themed, speaker-packed bass-mobile. Jay Jones, AKA ‘Joka’, used 62 speakers to transform his 2004 Tahoe into an earth-shaking monster on 30-inch rims, and he’s causing a stir at car shows around the South East US. Jay, whose moniker stands for ‘Justified Over Known Adversity’ told Barcroft Media: “When I go to shows and people hear me turn the truck on, they get to dancing, they come over with cameras, they enjoy my truck.