The Japanese are not only polite and friendly, they appear to be a very clean people. We have f.i. seen how deliberately they wash themselves before stepping into an 'onsen' (hot public bath). But they are not only clean on themselves, they are so on their environment as well.
There are only brand-new cars in the streets it seams. But no, all the time you see people washing, rubbing and polishing their cars on parking lots. The result is shining car paint all over.
Then the most striking thing to me is that there is absolutely no litter on the streets. There's no scrap of paper, cigarette-but, empty softdrink-can or bottle whatsoever to be found. Very nice and agreeable, we have seen otherwise in other parts of the world.
Now you would expect lots of garbage bins on lamp posts, railings etc. But again no, there are none! None at all. We don't quite understand how they do it. When we buy our coffee and sandwiches etc. to take away the only place where we can dispose of the packing and empty cup is in the shop where we bought it. We do see other buyers do the same.
That's it, you will find no garbage bin ever in a Japanese street, neither will you find any litter.