I remember not that long ago, there was a Silverado commercial where they threw a toolbox in the bed of an F-150 and a Silverado. Toolbox punched through the F-150's aluminum bed, and bounced off the Silverado's steel bed.

As the owner of an S10 with 20 years worth of dents in the welded steel bed, I have to wonder how soon I'd put a board clean through an injection molded plastic body. I could see making most of the cab and engine bay...well, "engine bay" out of maybe fiberglass panels but injection molded plastic with no reinforcement?