Remember that there is also a huge demand for this device. Even if the "certification" drags on, if (IF) they can complete a hand held device, the market may demand to use it as a tool to determine probable cause for detainment and obtaining a warrant to draw blood. Probable cause derived from an instrument that is in the final stages of development can't be too far of a stretch - they talk to dogs for it now.
On another note, it's important to look at their deveopment team. Dr. Yost has a track record of success, and doesn't go off half cocked sending his projects out into the world. There is no doubt in my mind (you need to make your own decisions) that this will work from a technical standpoint. Commercially there is a market. From a regulatory perspective, I really don't know, but it has to be better than asking animals if a person is OK to drive. Really, Dr. Doolittle... You're telling me I'm high, but you're the one asking questions of a dog..... (I have nothing against dogs - they make great pets & companions).
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