I haven't had this happen to me yet but I fear it may today, eek! Our car displays how many miles you have left before the tank is empty, but I guess once you hit a certain level, it just says 'low fuel' and the remaining mileage goes away. I kept meaning to go to costco to fill up but had to run little errands here and there over the past week, and now I'm scared I won't be able to even get to a gas station in the city (where gas is at least $0.40 more). Yikessss!