@matigo compared to what I had rigged up in my Matrix, yes. The Prius has an audio system with proper Bluetooth support. In fact, it's easier to play stuff off my phone than it is to turn on the AM/FM radio (which, of course, I almost never use).
Meanwhile, my Matrix has a CD + Cassette Tape player. I had a Bluetooth speaker in there, which I could barely hear once I got up to freeway speeds.