A silly update but something I needed to finish before I go any further: Lane striping!
When you can't find 1/4" tape
Locally - just slice 1/2" tape with an xacto. It doesn't have to be pretty as you only need the good edge. I freehand my tape as tracks back in the day were not remotely perfect. BTW - this was a ton of taping!!!

I use a small brush to slap it on and peel the tape fairly quickly thereafter. I use the cheap Applebarrel paint from Walmart.
And a few hours later...


With a little grime in the corner:

Still have weathering and cracks to do but it is getting there!
Oh! I also started my next spectator area:
