If America is addicted to oil (as even President Bush admitted in 2006), then Atlanta is a jittery crack whore for petro. Our sprawl and the states dearth of leaders willing to go to bat for regional mass transit or smart growth make the metro areas prosperity especially vulnerable to spikes in oil prices or dips in supply. Enter ROB DEL BUENO. With help from the Southern Alliance for Clean Energy and a corps of volunteers, the former Man or Astro-man? bassist makes and sells biodiesel a clean alternative to petroleum diesel made from used cooking oil. Del Buenos fuel powers a small fleet of cars and buses around town. And unlike our countrys oil titans, he doesnt receive gazillions in government subsidies. 250 Arizona St.