I've mentioned this before. On one of our first dates, I was driving to Mrs. Scotch's house with my aging '92 BMW, and my fuel range reading was low, because I was late and in a rush. But it was at 50 miles, which isn't too critical. However, I was halfway to her house, and my car died in front of the Salem NH library. She had to meet me there and take me to a gas station, so I could get a can of gas to bring to the car. Needless to say, it didn't present me in the best light.
As it turns out, my fuel-level float was getting stuck at a certain point. So every time I got down to a certain range - like 45 or 50 miles - it just stopped there. For the remaining time I owned that car, it was just something I had to be aware of.