It seems everyone's memory has its own ways. As for me, I used to have a hard time remembering complicated paths that I had been exposed to only once or twice when driving, and it took really a number of times for paths to stick. That was before the GPS of course, but even before using this, I got better over time. So, I guess for me that was visual cues that were not as effective as they should be, but that's always something you can work on.