This is truly an amazing adventure, Erkka! I've dreamed about doing something similar a few years ago when I first found your blog, going to visit some friends on the next city by bike. But it happens that it was a lot farther, and having to ride some 100km on a highway full of trucks and cars wouldn't be very pleasant. The topography here has a lot of hills too, so that just makes things more complicated. But that's still a plan that I have somewhere at the back of my mind, of just taking my bike and going to see friends somewhere far away, and I hope to be able to do that someday!