I bought this vehicle several months ago from the city of Dallas. It has been fleet maintained. It runs great looks great and i have put several thousand miles on it myself. It is CNG only it does not use gasoline. I have owned 5 of these vehicles and every one of them has had the same tear in the seat above the hinge visible in the picture. I would drive this truck anywhere. the mileage will vary as i will continue driving it until it sells. Feel free to call or text. The tank expired in 2015. In OK where I live there is no requirement to replace the tank but you should check the rules in your state. Also, in Oklahoma you are allowed a state tax credit of up to $1200 just for owning the vehicle but you should check with your tax professional about whether and how much you qualify for.