Came home from work, put my truck in park and put the emergency brake. I came inside my house. Minutes later came outside to get something from my truck, opened the driver side door and reached inside to grab a bag - and the truck started sliding down my driveway with me hanging halfway outside the truck. I fell to the ground and the front tire ran over my right arm. I went to the ER and luckily no broken bones just really bad bruises.