I'm thinking I'd like this so I can use it as a single line out from the phone to the aux port in my car that will charge it at the same time. Maybe that makes me lazy because I don't want to plug two things in when I get in the car, but I also like a clean look. Not to mention, I haven't seen a cable that carries audio from the micro usb port to a 2.5 in jack (and I assume this one will, at least via an adapter/splitter). So I think this is the only cable that will do so far.
I'm hoping I might be able to rig a dock in the ash tray of my center console area (above the shifter) that I can just automatically stick my phone in for the drive. That way it's completely visible for nav, will play music, and keep a charge.