Narrow bars and leverage

So what do you do with your hips, rotate them around and squeeze through those gaps.

Do you also use super low q factor cranks and then remove feet from pedals and put them into main triangle to get even narrower.

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.