When Steve gets out of his car in the rain ,to meet the Meighans at the new bank ,his windshield wipers keep going. When he finally heads back to his car ,they've shut off. Even though no one else rode in the car with him.
The Meighans' new store is called Hawaiian Sound (it's on the sign outside), but the panel inside reads Hawaii Sound.
Late in the episode, McGarrett escorts the Meighans to what appears to be an empty storefront in a partially completed shopping center just as it is growing dark. But as they enter the store, the reflection in the slowly-closing glass door reveals the film crew and their equipment nearby.