Never trust the car's computer to tell you when you need or don't need gas.
My Dodge doesn't want you to run out of gas, its a courteous truck, my Chevy lied to me the first time I trusted it on the Lake Pontchartrain Causeway, it said I had 48 miles left before refueling and after making it more than 3/4 of the way across, with the gas guage still showing somewhere around 28 miles to go, it abruptly ran out of fuel.
This was last yr, and I had to call a friend who owns a wrecker service. I was pulling a 12' flatbed trailer at the time as well. We put the truck on the flatbed and pulled the trailer with the wrecker truck.
I refuel plenty ahead now on the Chevy.