I learned the hardway "as did my shop door"! Well my shop door paid the price of my Gooberness. I could have just turned it off or pulled the parking brake, but instead I jump out thinking I could get to the other side to do the exact same thing I could have done from the passenger side. the reason it was running was I was trying to locate a horrible static sound in the sound system when it was on. I know PATHETIC!. #hummer #hummerh1