private void LoadAndAdjustKn5() {
_materialsProvider = new DepthMaterialProvider();
_texturesProvider = new TexturesProvider();
DeviceContextHolder.Set(_materialsProvider);
DeviceContextHolder.Set(_texturesProvider);
_materialsProvider.SetKn5(_kn5);
_carNode = (Kn5RenderableList)Kn5Converter.Convert(_kn5.RootNode, DeviceContextHolder);
_scene.Add(_carNode);
_carNode.UpdateBoundingBox();
_carNode.LocalMatrix = Matrix.Translation(0, UpDelta - (_carNode.BoundingBox?.Minimum.Y ?? 0f), 0) * _carNode.LocalMatrix;
_scene.UpdateBoundingBox();
}