Brad Keselowski and the No. 6 Ford Mustang paid homage to the classic Castrol GTX brand with a special throwback paint scheme at Darlington Raceway. During the Official Throwback Weekend of NASCAR®, Keselowski’s potent ride turned back the clock to the retro Castrol GTX branding that adorned many iconic motorsports machines over the years in NASCAR® and beyond. Keselowski’s fans can now add the official Lionel Racing die-cast of this special throwback car to their personal collections. Each die-cast will feature metallic foil numbers, just like the on track version.