It might with a road that does not get a lot of traffic, like a rural country road that is not a primary artery for commuter car traffic, because on this road there is likely longer gaps and more often where the motorist does not have to always slow down to 20 mph to pass, but rather can pull into the opposite direction lane to pass.

Even in theory the idea seems like a bad one with traffic moving at 45+ mph, and many times at 55 mph. That speed differential is too great to risk.

I understand what AlmostTrick is saying, and if you had to do it occasionally because you have no other choice then that's the way to do it. But man, to risk this day in and day out would stress me out totally. I couldn't do it.

A route I used to take involved me riding on the centre lane of a highway overpass where traffic on the right lane exited onto a highway, and traffic on the left went straight through. It was only about a 250 m stretch, but cars moving on both side of me at 70+ km/h was unnerving, and was stressed about it every single day.