I built this to deliver mail, but not doing that any more. The seat will slide over into the middle and lock in place and there is a shelve for your dps letters and your raw mail, and your small packages will set down on your right for easy excess. The car is a very reliable honda civic with a very good 4 cylinder. There is some rust on the car but doesn't effect the performance of the car. Also the is a sliding window to keep the wind and the cold air out especially during the winter months, sorry but it does not have a/c. You will love the the comfort of this car while delivering mail. Also the car has 4wd .