Because it takes a substantially new and different approach from all of the in-car speakerphone accessories we’ve tested, Speaky quickly struck us as one of the coolest products that debuted at this past January’s CES. Rather than trying to find another way to package a flat panel speaker, microphone, and battery into a flat or boxy visor-mounted unit, Bluetrek created a glossy plastic shell that looks sort of like Marvin the Paranoid…