I understand how map caching works. Here is my dilemma - I'll be flying to LA in a week and won't have Internet access. I plan to rent a car and drive around.; would be nice to use my pb to navigate. Guess I'll have to prepare in advance... and make sure that my cache is large enough so that it doesn't get overwritten.
Don't get me wrong, I appreciate the time and effort that went into creating this app, I'm sure that many improvements are on the way.