19. Simpson’s Platinum Plus restraints are the very same ones used by the NASCAR Cup drivers and made in Simpson’s shops in Mooresville. They also feature some very unique design features. For example, Ashline says it is safer and more comfortable for the driver is the shoulder adjuster is kept low, so Simpson keeps the lower straps for the shoulder belts shorter than most. This makes it impossible for the driver to wear the adjuster too high on his or her chest.