5. Up until this point in the process, the body has been mostly tack-welded together. These re-spot robots add hundreds of finish welds to the body to deliver the structural integrity engineered into the design. The whole process is monitored intensely to ensure that they are getting the best quality weld. As a matter of fact, during each shift a body is randomly removed from the line and chiseled apart to ensure that the welds are perfect. Interesting fact: When completed, there are over 4,000 welds on each body.