Narrow bars and leverage

My bars aren't narrower than my shoulders, infact they are slightly wider, I was making a point about despite the downsides, short bars can be useful. My shoulders are wider than my hips too.
When filtering through cars, the most lightly thing to hit me is wing mirrors of vans/trucks etc, as they are at shoulder hight. Normal cars mirrors are at the same height as my bars, and as such I cannot squeeze through the gap if it is too small at bar height, but can at shoulder height.

If your bars are wider than your shoulders then you haven't got narrow bars anyway.

But even narrowish flats/risers are still usually wider than 42cm which is the average drop bar anyway but because of the hand angle they just bunch up the shoulders more than drops.