I was flying my P3 all morning and all went as expected. No surprises. Recharged battery for third time and I thought that I would do a roof inspection on the house in the,early afternoon. Blazing hot an intense sun. I put the unit on the driveway. I changed no setting from my morning flights. Then to avoid the hot sun and be able to see the iPad Mini, I went into the garage and was standing within eyeshot about 15 feet away. I took off using DJI Pilot a usual. No touching of control sticks or anything else on the unit. Then, without warning, P3 attacked! It rared up and headed right for me at an amazing rate of speed! Right at my face! I was able to duck in time but the unit crashed on the garage wall close to the kitchen entryway. Miraculously, P3 avoided any injury despite the wall pounding. What on earth could have caused P3 to come at me that way?