Here are some flags for your fictional or real world machines to show off which nation you are from. These are the official flags. I will be adding more countries soon.
These are the ones I could find to replicate. They are all .PNG with transparent backgrounds. They are all 1200px wide.
SPECIAL THANKS TO DON RUDI FOR CORRECTING ME!
Some examples, not all are shown:
[RESOURCE] PT.1 BLANCPAIN GT SERIES STYLE NATIONAL FLAGS v3.0
National flags for GT race series