It's not wrong. You don't need a car in Germany to move between most cities. But you do need a car to get around in rural Germany, especially between small towns.

This was a bit of a culture clash for me when moving from a city of one million to a much smaller city of fifteen thousand. I was used to being able to take public transport to get everywhere and I can actually take the train to move between the two cities, but in the smaller city everybody has or shares a car.