Well, it’s a lot of paint. But it pretty clearly tells all road users where the bicyclists belong. This road-treatment experiment is being conducted in Salt Lake City. You can read more about it here. And see more photos here.
As you know, I like sharrows. I like paint treatments which encourage good road position and inform motorists that cyclists belong in the lane (not the gutter). This might be overkill, and it’s a lot more expensive than just painting sharrows… but recognizing the difficulty of getting cyclists out of the gutter, maybe it isn’t. It will be interesting to see the results.