I live in Canada, but I go to Japan often and until you've really had the chance to see one in real life, you will notice how small this car really is. Its very cute and all asian chicks will dig you, but at the same time, I had the aweful jittery feeling that the cube might simply roll into the ditch when a MAC truck passes you on the highway, especially in North America.
Get into one... the cubeness makes it seem spacious headwise, but for leg room, if you are 5'2-5'7, you would definately feel cozy in the car. I tried the Cube3, the one with 3 rows of seats and to be honest im 5'6 and I didnt fit. (maybe got to loose that gut). If you do have the chance, do check out the sofa seats. They are awesome.
Nevertheless, if it comes to Canada, I will definately buy one cause they are great for city driving. I've always wanted a small cubic shaped car so I can fit tall furniture.