Very interesting info.
Of course your steering wheel was on the “wrong” side over there too.
No while we were there they still drove on the right in Okinawa, it was after that they changed to be like the mainland...
we did buy a Daihatsu van with the steering wheel on the right while we were there for my husband to drive...
almost brand new cost us $600 we couldn’t bring it back though and sold it for a profit...