I've got an iPod and a USB loaded up with music, and I'll put some songs on my wife's iPhone, so one of those should work.
How about using the cell phone for GPS-based driving in the USA in unfamiliar cities? I know they can do this, but it will be the first time that I have tried. And....my phone has a Philippines plan, so I don't know if it will be able to download data in the US (unless I buy a 10 day data plan). Should a non-US cell phone using Google maps be sufficient to get me around Miami, Sarasota and Tampa areas? Does the Google map function require data, or does it work purely on GPS positioning, and idea?
I'm debating buying a GPA Navsat device for $30 on Ebay, and just shipping that to the first hotel. The rental agency charges $12 per day for a GPS device, which is crazy considering they appear to cost about $60 brand new.