I have a new 2011 Supra 21V with the GPS. I was expecting the GPS to come loaded with maps of local reservoirs (Jordanelle, Deer Creek and most importantly Lake Powell) but i can't find any, and i can't find any online.

Anybody have any information on where I can buy maps of lakes and upload into my GPS. Right now the GPS is mostly worthless, it just shows lines where i have driven around in a big yellow blob.

Thanks!