That's the radio setup that was available in the 2.5, which allows for the 7" navigation / audio screen you have in your dashboard. It's expensive and becoming increasingly impossible to do to a Roadster without one due to parts scarcity.
Thanks. Yes, I have the Alpine "infotainment" system with stereo and NAV. Frankly, the NAV in that unit is not as good as my old Garmin Nuvi, which is not as good as Google Maps on my phone. I have not used the Model 3 enough to have an opinion yet on its NAV. I vaguely remember hearing it uses Google Maps.