If this is considered, I think it should be something we would set parameters for before hand. For example: How far off course should the search be made? What might be just a small side trip for someone in an experimental "rocket" could be a half a day trip for another in a Cub. A "Look ahead for closest weather on my approximate route" would be relatively simple (I would imagine) and useful, but looking for hotels, crew car, restaurant, and other amenities would seem to need more personalization.