Since its isnt updated its broke af.
To all of you guys wanting to uninstall this mod here is the following instructions.
1. Go to your main MSC folder in the steam folder or whatever folder it is in.
2. mysummercar_Data and scroll down
3. There will be sharedassets1.asset.BAK001 and sharedassets1.asset.BAK001 (there will be multiple if you installed it multiple of times)
4. Delete the ones the doesnt have the .BAK001 (MAKE SURE ITS THE .assets)
5. Rename sharedassets1 and 3.asset.BAK001 to sharedassets1.assets and sharedassets3.assets
6. Relaunch MSC and the satsuma should be normal.