BUCKS COUNTY SERVICES, INC. and Concord Coach Limo t/a Concord Coach Taxi and Concord Coach USA t/a Bennett Taxi and Dee-Dee Cab Company t/a Penn Del Cab and Germantown Cab Company and MCT Transportation, Inc. t/a Montco Suburban Taxi and Rosemont Taxicab Co., Inc., Petitioners v. PHILADELPHIA PARKING AUTHORITY and Pennsylvania Public Utility Commission, Respondents; Executive Transportation Company, Inc., t/a Luxury Sedan Service, and McQs Enterprises, Inc., t/a Yellow Cab Company and Arink, Inc., Petitioners v. Philadelphia Parking Authority, Respondent