This interactive visualization shows car preference rankings depending on where a person is coming from and where they are going.
Clicking on a country colors other countries based on the kinds of cars the people from those countries tend to rent. E.g. If France is clicked, and the nordic countries are all the same color, it means that the nordic countries have similar car preferences.
Hovering over the circles near the bottom of the map gives a tooltip that contains information about the rank order of car groups for each color. Clicking on countries will create a tooltip that lists several countries from each cluster. Note that in both cases, the information displayed in tooltips is abbreviated.
I recommend clicking on the "open in new window" option and resizing with command-plus or command-minus for a better experience.