What's wrong with AF Area mode = Closest Subject

I thought that Closest Subject might have meant the ppl in the foreground would be used to calc the auto focus? sure they're not smack bang in the centre of the frame but I wouldn't have thought that wasn't required.
Still it's kinda cute that all 3 cars are sharply focused even though they're all different distances away.
Bob in Bull Creek

Still it's kinda cute that all 3 cars are sharply focused even though they're all different distances away.
Bob in Bull Creek