Portable Sirius - Vehicle to Vehicle
My wife and I like to camp way into the backcountry off our bikes. Way beyond AM or FM reception.
I picked up a "portable" Sirius" unit I take from car to car and to the bike. I've not worried about using it during the day and connecting into my NAV VI or Helmet, but we very much enjoy catching a quick peek at the news or some music in the evening. I connect the unit to a battery brick for recharging phones, the size of a deck of cards - it will last over a week but recharges off the bike. I also connect up an antenna, comes with the unit and an audio cord to a rechargeable speaker. Pretty good sound anywhere.
I usually have the portable unit in my truck - better fidelity than the built-in unit from my Dodge truck. I'm on a GSA.