I'm pretty sure this topic will not pique most of RomUlation's members's interests seeing this isn't ROMs &/or Emulation related, nor is it of a next gen game but seriously, this mod along with other Add-ons like the RHW (Real/Rural Highway Mod), NWM (Network Widening Mod), SAM (Street Add-on Mod) HSRP (High Speed Rail Project), STR (Single Track Rail mod) & many, many more such add-ons have really kept SC4 alive all these years breathing new life & adding replay/building value for the game.
Just look at the "out of the box" (by this I mean things you could not do with the basic vanilla or even with the Rush Hour expansion Pack) stuff you could build with these awesome add-ons:
*All video links belong to well-known members of various SC4 Custom Content Communities*
What you could do with the NAM:
http://www.youtube.com/watch?v=cF1EtcPFFGI
NAM's double decker/Dual Network puzzle pieces:
http://www.youtube.com/watch?v=AbHDwgcXrBE
NAM's GLR (Ground Light Rail) or Tramway System:
http://www.youtube.com/watch?v=TzQxCs0_7RQ
NAM Underground Rail... nope not Subway & 100% UDI (U-Drive it!) enable:
http://www.youtube.com/watch?v=YPnaW5w7VBs
The HSRP:
http://www.youtube.com/watch?v=nEtQ0B-xdxg
The STR & SAM:
http://www.youtube.com/watch?v=nEtQ0B-xdxg
The NWM:
http://www.youtube.com/watch?v=yPBmx0RL7ts
Stuff in NWM 2.0:
http://www.youtube.com/watch?v=eZhlw4Vk-a8
The RHW:
http://www.youtube.com/watch?v=m5vDnEd6l2U
RHW 5.0 Flex SPUI (Single Point Urban Interchange) :
http://www.youtube.com/watch?v=Yd9MumOT9Po&feature=related
EDIT: Addendum:
Here's a quick pic of me playing around with NAM, SAM & NWM pieces as well as several mods I absolutely love:
Spoiler