They're testing them in Ann Arbor and other cities too:
Here's more detailed info. on the Kzoo pilot:
It's an intriguing concept and perhaps one that's been tested in Europe and shown to be an improvement over our traditional narrow bike lanes in the USA which are oftentimes in the door zone of parallel parked cars, or full of debris, dead animals, etc. Might help resolve some of those problems, but who knows, might just introduce new ones. Certainly it is likely a design that will only work on certain roads with low traffic volume during rush hours (when bike commuters would also be present). I'm all for experimenting with different configurations. Sadly, most traffic engineers are unwilling to do any experiments on our roads that relate to improving things for non-motorists.