diff --git a/.gitignore b/.gitignore
index 18d1029f..948315d0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,8 +11,13 @@ __pycache__/
 /maps/*.skate
 !/maps/format-demo.skate
 
+# Local investigation notes (icons kept for release packaging).
+/docs/*.md
+
 # Local extraction, animation authoring, archives and credentials.
 *.zip
+!/mods/native-trainer.zip
+!/mods/mario-kart.zip
 *.7z
 *.rar
 *.xex
@@ -20,6 +25,9 @@ __pycache__/
 *.i64
 *.idb
 *.glb
+!/mods/Skyline_Drive_Mod/skyline.glb
+!/mods/Skyline_Drive_Mod/fallback_car.glb
+!/sdk/examples/mario-kart/kart.glb
 *.gltf
 *.fbx
 *.blend
@@ -34,6 +42,7 @@ __pycache__/
 *.key
 
 # Personal feature-test launchers and historical setup reports.
+/BUILD-RELEASE.bat
 /BUILD-MULTIPLAYER-TEST.bat
 /PLAY-MULTIPLAYER-10-INSTANCES.bat
 /PLAY-MULTIPLAYER-2-INSTANCES.bat
@@ -48,10 +57,7 @@ __pycache__/
 
 /mods/.cache/
 
-# Bundled mods requested for source checkout and distribution.
-!/mods/native-trainer.zip
-!/mods/mario-kart.zip
-!/sdk/examples/mario-kart/kart.glb
+# Bundled example assets requested for source checkout and distribution.
 !/sdk/examples/mario-kart/rider.json
 
 /BUILD-MULTIPLAYER-TEST.bat
diff --git a/BUILD-RELEASE.bat b/BUILD-RELEASE.bat
deleted file mode 100644
index d1bac7e4..00000000
--- a/BUILD-RELEASE.bat
+++ /dev/null
@@ -1,7 +0,0 @@
-@echo off
-setlocal
-cd /d "%~dp0"
-if not defined ProgramFiles(x86) set "ProgramFiles(x86)=C:\Program Files (x86)"
-set "PATH=%USERPROFILE%\.cargo\bin;%PATH%"
-powershell.exe -NoProfile -ExecutionPolicy Bypass -File "%~dp0scripts\Build-Release.ps1"
-if errorlevel 1 pause
diff --git a/mods/Skyline_Drive_Mod/fallback_car.glb b/mods/Skyline_Drive_Mod/fallback_car.glb
new file mode 100644
index 00000000..ea403b59
Binary files /dev/null and b/mods/Skyline_Drive_Mod/fallback_car.glb differ
diff --git a/mods/Skyline_Drive_Mod/skyline.glb b/mods/Skyline_Drive_Mod/skyline.glb
new file mode 100644
index 00000000..33e4b860
Binary files /dev/null and b/mods/Skyline_Drive_Mod/skyline.glb differ