The authority shall not directly engage in the sale of gasoline, the sale of automobile accessories, automobile repair and service or any other garage service, other than the parking of vehicles, and the authority shall not directly engage in the sale of any commodity of trade or commerce; provided, however, that the authority may lease space in any of its facilities for use by the lessee for the sale of gasoline, the sale of automobile accessories, automobile repair and service or any other garage service and may lease portions of any of its garage buildings or structures for commercial use by the lessee, where, in the opinion of the authority, such leasing is necessary and feasible for the financing and operation of such facilities, and, provided further, where, in the opinion of the authority, the space above any parking facility is not needed for parking, the authority may lease the right to occupy and use the space above any parking facility for commercial uses other than parking, together with the right to use and occupy such space within the parking facility as may be necessary for the purposes of access to and support of structures occupying the space above such parking facility and, provided further, the authority may lease up to 5 percent, or such other amended percentage under federal law that would permit the issuance of tax free revenue bonds for financing of construction, of the total square footage of any of its garage buildings or structures located within a city's central business district for commercial use that is accessible from the level of the street adjoining the buildings or structures. Any such lease shall be granted by the authority to the highest and best bidder, upon terms specified by the authority, after due public notice has been given asking for competitive bids; provided, however, that if after such public notice no bid is received and/or the authority rejects any bid or bids received, thereafter the authority may negotiate any such lease or leases without further public notice but on a basis more favorable than that contained in any bid or bids rejected, if any. The phrase "due public notice", as used in this section, shall mean a notice published at least 10 days before the award of any such lease in a newspaper of general circulation published in a municipality where the authority has its principal office, and, if no newspaper is published therein, then by publication in a newspaper of general circulation in the county where the authority has its principal office. The authority may reject any or all bids if, in the opinion of the authority, any such lease granted as a result of any such bid or bids would not be adequate or feasible for the financing and operation of such facilities.
22 Del. C. § 504