1/64ish. Some are a more true 1/64 but most of them are Hot Wheels and Matchbox which are around 1/64. Aside from the large food truck and the rollback the rest of the vehicles in those shots are just the $1.25 mainline cars I've added some detail to and swapped the wheels and tires.
At this point I'm a little more analog than that and probably will be for a while. I run a couple of different types of lighting in the stuff I build. Because I'm doing these builds with photography in mind a lot of it is more like lighting in a theatrical production. My builds always have some built in lighting so they can be pretty stand-alone but lighting for shots is often filled in with lighting from a "rig" haha. It's basically my swing arm magnifying lamp that I have several different types of light attached to with magnets so I can position them where needed.
My power setup is pretty simple. I have 2 3V-24V power supplies that each have a 10 port hub. I run one at 3.15v for the majority of my lighting which is 3V. The second one runs at 12v but a couple of the ports go to USB to reduce them to 5.1V for some wireless LEDs I use. I might just make it a dedicated 5.1V power supply though because I run almost nothing off 12V these days and when I do it's usually something I need my dedicated 12V30A supply for anyway. Slow motion video takes a lot of light so I sometimes use some LED off road lights as lighting.
I do run RGBIC LED strips which are app/alexa controlled. They are part of the fixed floor lighting in this model and I have 6 overhead units too that can be attached with magnets as needed. They have quite a few patterns like lightning and fireworks effects and the sound responsive ones are fun.
It let's me do fun things like this. I was at the store this morning any had the thought to check the pet aisle for aquarium gravel because it's usually clean and it's cheaper than buying the diorama specific stuff in quantity. I instead grabbed these frosted glass pebbles. Not knowing how much I would need I went big and bought $7 worth. This is maybe 50 cents haha. It's perfect for what I wanted though.
The center stays white because there is a small 3V globe light buried there. Since this is a mockup I just ran the wires over the edge.