After the success of Track 4.1, I scoured the web for ideas to build a bigger track design. The following factors were considered for the design:
- Easy assembly
 - Costs/ Supply of materials
 - Space saving
 - Fun Factor
 
Inspirations came from DCRAction, Hot Wheels tracks, Hollywood flicks, YouTubers' videos and DIY Slot-Car Enthusiasts' tracks. The track took about a month to complete after the initial sketches. Check out the photos below for a closer look.
Cityscape.
Streets of FACTCILITY.
The Projects.
Office Area.
Residential Area.
Launcher (At Rest).
Launcher (Activated).
Nissan Skyline vs Nissan Silvia, Lined-Up At The Launcher. 
Race In Progress.
Here's a short video on FACTCILITY on YouTube.
(ps. use earphones for maximum listening pleasure)
Resources
Sound F/X:
BGM:
Dioramas:


















