Hey, I have a question you guys might be able to help with. I'm going up to Canada this evening. I was planning on taking my car and use my cars nav system, but I just got rear ended and can't drive my car up. We can take my girlfriends car, but she doesn't have a nav system. I would like to use my phone, but I am terrified of the bill I will get using my phones data for the gps for 250 miles in Canada. I read up and saw it is possible to store a few city blocks, but is it possible to catche an entire 700 mile trip?