When I got the car I changed the Key Word to something unusual to avoid saying it in normal conversation. So the personal assistant just activates itself randomly when people are talking on the radio or when people are talking in the car.
On a 100 mile journey happens about 8 to 10 times, so it's become annoying. I could turn it off but I do find using the voice assistant to say" drive met to.......' and "call......" useful and easy to do. I tried to find a "sensitivity setting" on the voice assistant but to no avail. Could just be initial software problem that will eventually get fixed.
Good to know its not just my car which has this issue.