Garmin HomePort, finally the planner

HomePort sure doesn't look like Mapsource, which I found useful for years, but was getting pretty clunky. Looking at the new planning screens, I see goodies like Googly view management controls, a multi-layer search facility, an unusual bottom profile, and a "notes" function (I wonder if those will travel to the MFD?). Tide prediction, POI info, shaded relief, and port photos seem to supported but I don't think that's true of auto route making (aka Garmin Guidance) or photo maps (though apparently you can view a route in Google Earth). And there are some things on the screen below that I can't figure out. What is happening in the lower left window, for instance? And what sort of vehicle is intended travel along that route or track?

Ben:
I think that "amphibious" route you mention is actually just Rt 520, the Evergreen Point bridge.
I enjoy your blog and magazine columns.
Regards,
T. Arisaka
sv Talisman