Although the description suggests it is a complete course, these tapes are actually support for the book and are quite useless without it. The tape suggests it can be used in the car, but all the pauses are only long enough to press a pause button - I personally have never come across a pause button on a car cassette player, though some have a mute function - so it involves a lot of ejecting/rewinding and associated lack of attention to the road ahead. Not that you would try for very long since it gets too complicated too quickly without the book to back it up. If you are already learning German and can speak very quickly, this might help. Otherwise: forget it.