Self-balancing scooters have caused over $2 million in damage since December

We all know that the so-called hoverboards are bad news. In addition to making you look really stupid, they can also cause some serious damage. The US Office of Compliance and Field Operations recently compiled a report on the devices, and sent it to "Manufacturers, Importers, and Retailers of Self-Balancing Scooters." The letter urged the recipients to ensure that the …