Defendant appealed the decision of the trial court sustaining violations of R.I.G.L. 1956 § 31-12-12 (power of local authorities) and Rhode Island Airport Corporation Regulation 2.2.2 (permitted use at the airport). The Court held that the defendant’s argument that the Airport Corporation had no authority to enforce 2.2.2 because the rule is pre-empted by the Public Utilities Commission was waived because the defendant provided only a “passing reference to an argument and it is insufficient to merit appellate review.” Tondreault v. Tondreault, 966 A.2d 654, 664 (2008) (quoting DeAngelis v. DeAngelis, 923 A.2d 1274, 1282 n. 11 (R.I. 2007)). Further, the Court held that, as the defendant was an unauthorized driver within the meaning of the statute and he was not (a) “transporting a customer to the airport; or (b) previously summoned by a customer prior to entry,” the fact that he was not engaged in commercial activity during his travel through the short-term parking lot did not render the statute inapplicable to him. Accordingly, the violation was sustained.