I've created this topic to show the progress of the update.
Every compile I'll show what I'm doing with the map.

11/03/2022
- Added cubemaps to the garage (This will take some time to make the whole map, see image below for scale)
https://i.imgur.com/twMVqJI.png
- Attempted to fix tunnel wall alignment (Will be misaligned by itself because hammer decides)
https://i.imgur.com/FH9UrBr.png

12/03/2022
- Added cubemaps to the whole right side of the map (garage and roads)
- Copied right side road cubemaps to the left side (mirror)
- Added high resolution cubemaps to key areas on the garage (garage and showroom area)