Littlemouse, The source of my post was, "Consumer Reports Best and Worst New Cars 2012, page 84…the factory specs allow a maximum load of 700 pounds. Even the lowly Ford Focus is rated for a maximum load of 825 pounds, which I have to admit is surpassed by many, many drivers who have eaten themselves into those precious handicapped parking spots at the mall. You want to cry bogus before you did your research. The weight of compost I used was at the low end of the scale I found when I Googled “weight of compost per cu ft” so crossreferencing sources prove this is still a realistic estimated weight. You have to take into consideration that the front wheels need traction to steer, therefore adding excess weight behind the fulcrum that is the rear axle removes weight from the steering wheels. I hold firm that compost in a Mustang cant be good for the car nor the safety of the driver. All I could add is that I hope she doesnt need manure for her garden.