Many say that hitching in Sweden sucks. But it works too! As anywhere in Western Europe, the motorways are the holy temples of car driving religion and someone standing on them is committing blasphemy. But you can hitch on the on ramps. Better bring a good map, so that you won´t find yourself in an impossible place. You'd better not practice your Swedish if you're not very good at it. Almost everyone speaks English and people look at you in a weird way if your Swedish is kind of funny.