If you live in Europe you probably know Renault 4, in Slovenia known as "katrca".
When driving to Gorica vs. Monaco football game last week, we somehow came to the story that katrca has asymetrical rear tire opening.
Check it out for yourself, if you also don't believe me. Since I know this I have never seen katrca without this bug. Click for larger image.

Does anyone know the story behind this bug/feature?