A.T.T. Taxi (Alternative Transportation Trade Taxi) is a waste vegetable oil taxi service with Buttercup, a 1982 luxury Mercedes Sedan that was the means of transport for the State of Progress 2007 tour (www.stateofprogress.org). In March 2008, A.T.T. TAXI offered transportation in a 5-30 block radius from the 2008 Scope Art Fair. The service was offered for trade only. Passengers were asked to contribute an item to trade that served as the basis for negotiation of possible travel distance. No trade items were permitted to exceed the size of the vehicles’ trunk. Trade items were featured in an online A.T.T. Taxi gallery posted through the State of Progress website.