The phone idea is a nice backup. Actually, I have a Droid, and it is synced to my helmet via Bluetooth, so if I bring up the navigator on the phone and select a destination, I can cradle the phone, and the female voice speaks the directions and turns to me. It is a nice backup, but still no substitute for a picture map. I could mount the phone on the bike, but the screen would turn off after a period of time, unless I changed that setting, and I would also have to plug the power in to the bike because the battery wouldn't last long in GPS mode, but even then, after a few hours my phone would be hotter than a pistol.
I am really just wanting a GPS unit to replace the one I have now. A 6" screen would be nice. Heck, the IPad would be really nice, but it has issues with overheating during prolonged use and the screen is definitely not bright enough. Too bad, because the IPad uses Google maps. With Kindle ripping on Apple for the display issues, I know it is just a matter of time before they come out with a new IPad that will be plenty bright enough for outdoor use.
The other thing is, every day I sit and talk about this, a GPS drops it's price, or a new GPS is introduced. This is an ever-changing market.
2010 Kawasaki Versys
Givi Shield, Givi PLX V35 Side Cases, Givi V46 Top Case, Powered Tank Bag, Corbin Seat, RAM Mounts, Venhill SS Smoke Brake Lines, HID 5000K/3000K, LED Marker Lights
2012 BMW K1600GTL
"There was Dallas, from Phoenix; Cleveland - he was from Detroit; and Tex... well, I don't remember where Tex come from." - The endearing Forrest Gump