Just came across an interesting looking suggested post on Facebook and was wondering if anyone has heard about it:
http://www.dragoninnovation.com/projects/23-hammerhead
There is less than a day left on the Kickstarter-style campaign. Despite not owning a genuinely 'smart' phone with GPS to pair it with (I have plans to upgrade) nor really needing navigation for 95% of my bicycle use, I am still quite tempted as it seems like a neat concept.