Hover Street Sign

 is a limited-time decoration that was released on August 16, 2016, as part of the SciFi 2016 Event. It a craftable item. Two demos obtained for Robot Parts, those  to leveling up the 3D Printer. Once the demos are completed additional ones can be obtained for Future Bucks.

Trivia

 * It can be placed on grass, pavement, dirt, beach, boardwalk, pier, edge of boardwalk, and edge of pier.
 * The decoration appears in Season 23 episode Holidays of Future Passed.