The first time I got to the zero miles to empty on my GT I was in a very desolate area about ten miles from a station.  Thankfully it made the ten miles and still had about three quarts of gas leftIn the tank. Many times subsequently I have reached the infamous zero miles till empty and usually I had a gallon or so left.  However on a recent ride I was about five miles from home when the zero till empty appeared and this time it wasnt lying.  About a mile later It ran out.  On the freeway,  at night, in a drizzle.  My point is dont become complacent like I did and assume you can still go many miles after the zero till empty indication.  Dont trust that sucker!