I think the main use case is for other devices, like tablets and laptops, that don't have their own radios. Even though most people can in theory tether to thei

I think the main use case is for other devices, like tablets and laptops, that don't have their own radios. Even though most people can in theory tether to their phones, most people also either don't know how to do that, or have data plans that make it difficult or impossible. With an in-car hotspot, my kids could bring their tablets with them and stream movies, even when I'm not in the car to set up a hotspot on my phone. I'd also think this would be a big hit for road warriors - the kind of people who live out of their car, and today tend to post up at Starbucks in between meetings to grab some free WiFi. Now, they can just sit in their comfy cars with their favorite music, use the car's hands-free for calls, and work from their laptops. (Incidentally, one of the things I love about EV's and hybrids is the ability to leave the climate control and entertainment on when parked indefinitely without having to run the engine)