Everyone now knows about the somewhat (ahem...) heated debates over the efficacy of Coffee Joulies. However, I wonder whether anyone has any knowledge of a product like this:

http://www.gizmag.com/phase-change-cup-coffee/12596/

It's a coffee mug utilizing very similar technology to the Coffee Joulies, in that the mug is double-walled and the interior walls are lined with phase change material. Supposedly, this has the same effect as the Joulies: coffee temperature is lowered to the preferred 155-160 degrees (F), and kept there for a longer period of time than in conventional double-walled or otherwise preheated ceramic mugs.

There are articles all over the place circa 2009-10, but nary a word since. Anyone have any updates? What could've happened to so promising a product?

Aaron,

Check out the coffee mug mentioned in this recent article in the Pioneer Press (of the Twin Cities in MN). Looks to be exactly what you're talking about!

http://www.twincities.com/business/ci_2 ... -baby-warm