Food truck owners say they're cautiously optimistic about the potential for a longer serving time and a possible overturn of part of the rules on appeal. But they argue there is still far more work to be done to make mobile food operations a viable business in Chicago. The 2012 rules stipulated that food trucks can't park for more than two hours or within 200 feet of any brick-and-mortar food sellers, including restaurants and convenience stores like Walgreens. A third rule requires GPS tracking to be installed in every truck, and the data be made available to the public. The city said it has not yet accessed the data but that it needs it to track the trucks for health inspections.