One thing I noticed in the trailer is the roundabout with a broken line all the way around the circle. Is there any place in the world where that's done and makes sense?
I believe they are called concentric markings.
Spiral-style markings, like those predominantly used in Australia, Canada, and the US are a more recent invention.
I believe several countries have been known to make frequent use of concentric markings, such as Poland, Czech Republic*, Spain, France, and the UK. Some countries don't use any markings at all. Some, like the UK, have generally transitioned over to using spiral markings.
They work because drivers don't view the roundabout as a separate road. The markings simply help dilineate the lanes within the roundabout, not what traffic is allowed to do at the entry/exit points. As a general rule of thumb, the outside lane must exit and the inside lane may exit.
So, in short: it's used in many places, and it seems to make sense to the people who use them.
* The Czech Republic's use of concentric markings has made its way to the Wiki page for "
roundabout interchange", where you can see them being used at this interchange in the country:
