This is what most roads leading between cities look like; a single lane in each direction where you cross over to the other side to overtake slower traffic. The summer speed limit for these roads is often 100 kilometers an hour. Some of the traffic on these roads is limited to only 80 kilometers and hour. Most are trucks but some are old US station wagons and other similar cars that were imported as trucks and therefore limited to 80 klm/hr for tax purposes. Since nobody wants to drive behind slower traffic, there is lots of passing going on. Some of it is downright dangerous.
Of course, there needs to be no immediate oncoming traffic in order to safely pass. As there is more traffic on the roads there are less valid passing opportunities. That however, does not stop people from passing anyway. This is a typical example, as we are all driving at about 100 kilometers and hour (62 mph):
This last passing move below was especially reckless as it was not possible to see what was coming from the other direction due to the hill. As can be seen from the bottom photo, the passing area had ended for that very reason.
Finland is also experiencing traffic problems in the capital area as well. Driving in Finnish cities is interesting as people will walk into the street without even looking to see if there is oncoming traffic. However, there is good reason to look. See the following story for more details:
Traffic discipline very slack in Helsinki - Helsingin Sanomat
One problem in Finland is that cars are seen as the enemy, especially in the cities where people simply refuse to accept that there are valid uses for them. (Such as having two small children and needing to go food shopping.) So they have really pushed to keep speed limits in the cities down in the name of 'safety'.
I lived in Finland for three years, and the one thing I truly missed was not having a car. It was just truly frustrating to go to IKEA or wherever and then try to lug whatever you purchased home on the bus. At least I lived in the Capital and there was good public transport. Still, it took twice as long to get downtown than it would by car, even having to sit in traffic.
Oh, before I forget, try doing the same maneuver above with the road covered in ice! Just make sure that you have good studded tires...