Dirk Gently and the new Internet Radio

Is it just me or are internet radio stations like Pandora and last.fm based on an idea that resembles Dirk Gently's method of holistic navigation: i.e.
When trying to get somewhere, follow a random car.
You may not end up where you were going.
But you'll certainly find yourself somewhere you needed to be.

The only difference being on these stations, you don't follow one car, you follow the traffic.