As long as those cars are at home in the garage instead of on the road that's fine. The point is having fewer cars on the road, not fewer cars in general. Riding around on a bicycle and having a car for exceptional circumstances and a once a year road trip is healthier and safer than driving that car around every single day.
That also depends on weather around the year in a given country. Here in Poland travelling on a bike ranges from uncomfortable to impossible for 1/3 of the year.
It must be much worse than the weather in Norway and Finland, then. Or perhaps just an infrastructure problem? I imagine if they didn't clear the roads then driving could get pretty challenging too.