Unbranded sample car — source attribution
Creator: Karol Miklas / Lionsharp Studios
Original source: https://sketchfab.com/3d-models/free-porsche-911-carrera-4s-d01b254483794de3819786d93e0e1ebf
License: Creative Commons Attribution-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-sa/4.0/
Distribution source: https://developer.playcanvas.com/assets/porsche-911-carrera-4s.glb
Original source metadata is retained in the distributed asset.

K2 runtime adaptations: model scaled and positioned in an original display-case design; baked ground plane and badge material hidden; paint, glass, rubber and plate material properties adjusted. The adapted car presentation is shared under CC BY-SA 4.0. No endorsement by any automotive manufacturer, the model author or distribution host is implied.

Three.js, its loaders, controls, geometry and studio environment: MIT license (vendor/THREE-LICENSE.txt).
Draco decoder: Copyright Google. Apache License 2.0. https://github.com/google/draco/blob/main/LICENSE

Studio lighting HDRI: studio_small_09 by Sergej Majboroda / Poly Haven. CC0. https://polyhaven.com/a/studio_small_09
K2 viewer update: photographic studio environment, physical paint, reflective display floor and infinity-mirror lighting simulation.