A collaboration between Stairport Sceneries and ShortFinal Design is bringing us SAM Airport Vehicles for X-Plane 11. This addon will replace the default X-Plane ground vehicles based on the region of the airport you’re in.
The pack will include regionalized replacement vehicles worldwide. The package will include HD as well as PBR textures. Not only that but you will be able to customize the set by airports, and even by objects. Scenery developers that use SAM will also be able to set their own custom ground vehicles more easily
While no release dates have been announced yet we know the extension currently is in Beta testing.
Source: ShortFinal Design Facebook page.