 I rented a ford truck to carry some material and dropped a toolbox by accident into the bed, puncturing a hole.  I had to pay for it and it cost me over $1000.  Unfortunately, this happens a lot as now I see Chevrolet is doing a test it is advertising that its steel bed holds up while Ford's can no longer do the same.  So you get better gas mileage in the Ford but if you make a mistake a drop a moderately heavy item in the bed, you will have a hole in the floor.  See this video from Chevy:http://www.chevrolet.com/silverado-films.html