Just curious

[james_davis_nicoll]

[Poll #1331765]

Comments

[rgovrebo.livejournal.com]

Sweden drove on the left until 1967, even with land connections to neighboring countries, so apparently it can be done

And that's a major reason why they changed over - the borders to Norway and Finland are often only barely marked, so when going on a minor road, motorists might not notice that they should have changed sides.