That is amazing.
As someone who has made the dies for body panels of real cars, I would think the one off body work here would be more akin to the cold working of a blacksmith. A big advantage of the digitizing of the models they use to fit body panels to saves a ton of time though. Still, you're running sheet metal panels through rollers and checking the fit with first clay and then spotting blue, then back to the roller; rinse and repeat a thousand times to make something like that front fender.