Okay, maybe not 100% true: you can certainly spot a 240RS outside Japan, but probably not on the open roads! Outside Japan normally these cars end up somewhere in the corner of a museum or only be driven on circuits while the Japanese actually are very fond of driving heritage out on the open roads.

Only in Japan: spot a Nissan 240RS in the wild
Imagine what it would be like to hear a deep growl coming closer and closer, you turn your neck to the direction the sound is coming from and all you can see is this very wide flared 240RS homologation special!

[ Found in Toyota08's photozou]

Apparently I was wrong that you can only find a Mazda Cosmo down on the street in Japan!

Mazda Cosmo rustoseum
Apparently not all Cosmos have found their way to museums yet!

I found this picture here!

I did find some cars down the street already, but this can only happen in Japan:

Mazda Cosmo
Someone just passed this Mazda Cosmo parked in some building on his holiday trip! And if you squint your eyes you can even make out a Citroën DS behind the Cosmo!

Now what are the odds you will see those two amazing 60s cars at the same time? Amazing!!