Posting an update as I’m about to submit the final for Fundamentals in Texturing
Most of this is procedural textures but i did find an image texture of carbon fiber i ended up using from textures.com and I painted some dirt on the wheels using a brush texture I made with an image of cracking paint I took while i walked around the town I live near. For anyone interested, here’s that image. feel free to use I’ll say its public domain. 
I spent a lot of time on procedural textures on this one, a lot of metals and paints because car stuff, here are the ones i’m most happy with.
A glitter coat with customizable scale and rainbow amount, the rainbow even works with dark colors giving it kind of a crow feather result! real happy with this one and how small it turned out to be. (most of the others ended up being nightmare in size and I need to work on being efficient…)
Here’s some examples of its range


I also made an customizable anodized metal with the ability to shift the hue of the color range, decrease how much rainbow encroaches on the center and decrease the size of the rainbow effect range. this node group is a bit bigger but again still super happy with this one. 
here’s an example of some of its extreme ranges it can do. 


Preview on next one bugged but shader still works.

I made plastic and a few others I ended up using like leather, I could keep going on this but at this point i think I’m nitpicking and should finish up this project. Really enjoy procedural materials and definitely plan on looking more into the class specifically for that. might take a break and try the new animation course next though.