Vanuatu, they drive on both the left and right and swerve to the other side, surprisingly few road accidents. Probably due to terrible roads keep the speed down to walking pace......... Or the pedestrians walking in the road?
Personally, and back on topic. I'd change everything to metric! No more "miles/yards to next turn off". All the road signs be changed to Kms and metres! Bugger the OldFarts and "Imperial"