Thanks for the answers. I am just wondering if SYNC can use my data plan to get those traffic information instead of using Sirius serivce. I have 3GB/month data plan and I don't use them all. So it would be nice to show traffic info through my data plan without paying the subscription fee to Sirius. I assume Entune is using smart phone data to acquire the traffic info, based on its advertisement. I am just struggling between Prius and Cmax..