From what I have seen, you lose live traffic. It does not show up for me even when connected to wifi. You just gain back ability to play streaming music and watch streaming videos. The wifi connection is also glitchy, the car tends to automatically disable wifi when you start driving. And even when connected to hotspot, it will randomly lose connection, and your streaming music will stop playing, until you manually reconnect and restart the music. So definitely not as good as having premium connectivity.Question for the ignorant, if you used a hotspot rather than premium connectivity, is the car still constantly connected? For example, would you still have dynamic traffic routing in navigation via google? My understanding is no, but I'm not very knowledgeable in these things.