I know but for people going to work on a daily basis, it only works in combination with good public transportation. In Europe there are a lot of people who use it to get around quick inside a city (coming from and going to the train station).

I do not see the point in using it for trekking or every day use though (without taking advantage of taking it on the train/bus). The only good thing is that you can take your bike as luggage, which is great for long distance commuters.