Smart criminals. Hit rental cars as tourists are leaving town, in a rush about to board a plane, little chance of an actual police report being taken.
Not that this could be foreseen by the local PD or anything, though.
It used to be at the Miami airport, police and rental car agencies were pleading with out-of-towners (especially foreign tourists) to get away from the airport as quickly as possible and not stop until they are well out of the area. The reason? Carjackings, murder, etc. Not just breaking into cars and stealing stuff.