So tonight I went to pick up some groceries. As I was dropping to 2nd gear and slowly turning into a narrow uphill street leading up to the parking lot the car lost power. I looked down and the RPM was at 0 and a Run Power Active message had popped up. I was driving fairly slow and combined with the uphill street, the car came to a stop almost immediately. The engine start button was flashing. I started the car back up and went about my way. Initially I was thinking that I stalled it. After some testing in the parking lot, I realized there is no way it stalled because it didn't jerk at all. It simply lost power like it does when you run out of gas. It seemed to run fine until I got home although it felt a little sluggish. Any ideas what may have happened/be going on?