I was not trying to plug myself here, just wanted to let the guy who's looking for one know that he may be disappointed with it.
A little unfair, I think Jim. I think he wouldn't be, and the overwhelming evidence from those who've used this (both site members, and the friends I have who've bought one based on my experience with it) is that it works brilliantly and integrates beautifully with the HK Audio system. That's not to detract from your product, which is a great idea,
and perfect for those with a GPS, but there are plenty of folks with the HK audio system and no GPS. I have a Zumo 550, in fact, but given the choice of what to buy to use my cellphone on the bike, I wouldn't hesitate one nanosecond - the HK module, every time. (Though I'd really like to add the cellset device to integrate the Zumo audio without having to use the AUX input).
Jim