I drove my wife's car this weekend on a family trip. The low fuel light comes on in her car with a ridiculously long way to go before running out of gas, so I've learned to ignore it. I got distracted, though, and happened to look down at the range remaining and is said "0." I skidded into the nearest gas station on fumes. (Incidentally, my wife says she has gone a long way on "0" range many times. Cool. Cool.) I fill her car up with gas, get in and start it up. The range now says, "400." My wife tells me, "That's the longest range I've ever seen on my car. I think it's because of the way you drive." She was attempting to criticize my driving style (safe). I told her she was making no sense and that the range is based on the amount of fuel in the tank and the average MPG the car gets. Her car is five years old, so the average MGP is unlikely to fluctuate much. She was adamant that it was something I did. I posited that it was because I topped off the tank, but she claimed she does the same.