BROOKLYN - Finding your favorite food truck is getting harder and harder in Brooklyn these days as the NYPD moves to enforce a street vendor law.A Department of Transportation regulation prohibits trucks from parking in metered spots in order to sell merchandise. Vendors who violate this rule could get a fine and have their truck towed. Kimberly Ima, the owner of Treats Truck, says officers used to be lenient towards her because she is selling food. However, that changed when police say a group claiming to represent vendors challenged the regulation and lost, with the court ruling that vendors can't occupy metered spaces at any time.Ima say her truck is her livelihood and that she and other vendors are hoping they can work out an agreement with the city soon.