I was looking for a better way to carry my PV while driving. I had been tossing it in the cup holder to roll around, but since I just got a ProVari, I wanted something a little more stable, and something that wouldn't scratch it up. I found this at Wal-Mart, but I'm sure other places sell something similar too. It hooks onto your AC vent. It's intended for a cell phone, but it works great as a PV holder!