Driving in Postwar Japan

I started watching The Warped Ones on Turner Classic Movies tonight. I couldn't sit through the whole thing, but I did get curious about where it was filmed in Japan. A scene early on shows the two released criminals Akira and Masaru stealing a car, and I noticed that the steering wheel was on the left-hand side and they were driving on the right-hand side of the road (as was everyone else). Here's one scene of the guy (Masaru?) breaking into the car:

So my question is, I thought that in Japan, steering wheels were on the right-hand side and they drove on the left. I did a little Googling research and found that while Okinawa was still under US military rule, people there were required to drive on the right, but I didn't see anything about whether that was the case in the rest of Japan, especially around 1960 when the movie was made. Does anyone have any ideas about this? Does this movie take place in Okinawa?

[Update, 6/20/20: I forced myself to watch the rest of this, and there's a bit of dialogue where someone says, "The steering wheel's on the other side." The response to that: "It's a foreign car." So my question is sort of answered there. I also read somewhere that the movie was filmed in Tokyo. But I'm still confused by what I thought I saw was other people driving on the right-hand side fo the road... Maybe I was wrong about the whole thing--just saw people driving on the left-hand side. guess this blog post was much ado about nothing!]