Last time I tried, I couldn't even figure out how to exit navigation using voice. I'm sure it's possible, even easy, but the combination of not knowing the righ

Last time I tried, I couldn't even figure out how to exit navigation using voice. I'm sure it's possible, even easy, but the combination of not knowing the right incantation, car noise, language issues (does it expect German or English commands?) and overall stress meant I just ended up muting the sound system, which is a physical button.