I temporarily installed the Yaesu FTM-350 in the car today to show the GPS and Navi features. The GPS functions work great, but the Navi feature is...well....flawed. Basically, the Navi feature doesn't work at all. I don't know where or how Yaesu tested this function, but they obviously didn't test it very thoroughly. This will, of course, be the subject of an inquiry to Yaesu. Here's the video; watch and see for yourself. Let me know if I can answer any questions.