Some great examples here.
Here is my attempt at a 1/32 complete scratch built other then prime running gear
I was finding the Porsche 718 hard to find so taking a page out of Clive's book, I whittled one.



Soldered up a brass frame

Motor is a generic 130 type that I checked the rpm out to ensure it was running under the limit allowed
Made up resin wheel inserts, and decals on my laser Jet printer

This was built for the Porsche/Ford Proxy war and is sitting with Allen as we wait the start.