I dunno if anyone remembers running navigation software on a Palm Treo when a 1 gb sd card was super expensive, but you would actually download a major highways

I dunno if anyone remembers running navigation software on a Palm Treo when a 1 gb sd card was super expensive, but you would actually download a major highways file of the United States with all the major roads and that was only 50-100mb. While the last mile smaller roads were enormous files and you would download a state or metro area for your departure zone and your destination zone. It worked really well. You can probably navigate fairly well off of major roads maps that are publicly available for long trips, but the last mile local roads and short distances are paradoxically the major challenge.