When I was living in Vienna we had 2 cars and 3 bikes for the family.
Bikes were replaced more often, I needed to buy a bike twice in 5 years due to the original ones being stolen. Kept my car the whole time.
Not exactly sure what this article is trying to show. Bad statistics?
Most of us can't afford a car that we drive just for fun, but most can afford even a $4000 - $5000 bike that's just for fun. Included in these statistics are mountain bikes and racing bikes that people ride only in the weekends.
The number of people commuting on their bikes are more interesting, but then the US and a few other countries are screwed because of the distances between the city and suburbs or industrial parks that are inaccessible by anything but a car (European countries have these too).