I've also always noticed American factories seem okay with workers showing up in whatever they want - i.e. you see in that video they are wearing their own t-shirts. To me this shows a lack of seriousness and pride in the work and team unity. It also shows a lack of respect for safety workwear and process. It shows the employer is likely cheap, and doesn't want to pay for workwear, and furthers my impression that they view their workers as disposable. IMO, it looks absolutely ridiculous how in the Corvette video one guy is wearing basketball shorts and Vans and the woman next to him is wearing a different T-shirt and jeans. Compare to the harmony shown in the German video. Please don't try to tell me that individuality is important in a vehicle assembly line!