I have a wandering accent. Born in London to very London-accented parents, lived in Kent until I was 4, then Northumberland until 10 - where I picked up a Geordie twang, then down to the south east, where the Geordie twang was disapproved of and squished, then (after 3 years in Huddersfield) moved to the west of Ireland, where I've been for 20 years - and what started as a parody of the local accent has stuck in some places. so I now say 'care' when I mean 'car'. I tend to unconsciously reflect people;s accents back at them, not having a fixed one of my own!