You’re right. Cellular iPads have built-in GPS. You need a data connection to load the maps. But there are apps out there that allow you to load maps while on WiFi so they are populated with your GPS iPad if you don’t have a data plan when you’re out in the wild. I did this for a couple of years before I signed my iPad up for data. That was my 2011 iPad 2 cellularI know for me, I use my iPad for maps when driving. I prefer the larger screen. And I noticed… when someone uses their WiFi model iPad, their location isn’t as solid as mine. However, I’m not sure if that has something to do with spotty WiFi whereas I use cellular. But that person was using Verizon hotspot to connect to their iPad.