When announcing something new, Elon Musk sometimes just talks about plans, or sometimes just gives his plans away. With Hyperloop, Musk essentially said he was too busy to make it work, and was just giving the concept away. A few days ago, Musk said Tesla had a new product category lined up for release, and it was “not a car”. Our minds immediately went to batteries for the home, and we might have been right. According to a new report, Tesla has been testing batteries in homes for sme time, now.