Why? You'd have a clear view of oncoming traffic - if you turn your head....
To be fair, I'm not sure you would - the Google Street view camera is significantly elevated in comparison to a car, I think the verge would block your view somewhat.
Anyway back to the OP - there would be an argument and god knows which insurance company would win.
Car with priority should be able to stop in the distance they can see to be clear - so if the turning car was already across them when they came into view, they should stop. If they can't, they are at fault.
Common sense aside - they are always going to claim the car "just turned in front of them", and it'll be difficult to prove otherwise.