Costly mistakes

Running the car completely out of gas was a costly mistake...$500. There were several factors that led to this mistake. We share the car so R must have been driving when the gas light first came on. I was driving on Sunday so I didn't want to stop for gas, and I was in a hurry when I noticed the low gas. I wasn't driving very far so I figured I would be okay since you still have 20 miles worth of gas when the light first comes on. I assumed it was the first time the light came on. Anyway, I guess this pay out to the mechanics helped stimulate their economy.