But your cars are 1/24. So which scale do you go by? LOL Model railroading has the same conundrum. We just call it all "G scale". From 1/32, all the way to 1:20.3......which is technically Fn3, though it runs on the same 45mm track as all the rest of G scale. There's 1/32, 1/24, 1:20.3 and even some 1/18 out there and it ALL runs on 45mm track. LOL