a cautionary tale - true and yes i did this. Be careful when using the phone app for your car. i had used my phone to turn on the a/c and did NOT shut the app down. My wife and I drove to the grocery store and happily went about our shopping when there was an announcement over the stores pa system. "would the owner of the brown Tesla please come to the front counter" That's not a good sign. So instead i ran outside to see my car in the middle of the aisle. i quickly put it back into it's parking space, went back into the store while my wife stood watch over the naughty car. Ready to pounce if it decided to move again. And, yes it did. Now we were totally confused - had someone hacked into the car, has it started to act on its own? Meanwhile, back in the store five minutes later i decided to look at my phone and noticed the app was still on and in summon mode. Dutifully waiting for me to tell it to move forward or backward. Moral of the story; When using the phone app always remember to shut the app down before putting your phone into your pocket.