Elon Musk has said from the get-go that the Model 3 will support Full Self Driving, without going into any detail about the levels of autonomy, but he's stated that the car will be able to drive unaccompanied from coast to coast.
Easy to understand how you missed this, especially since Tesla only recently removed the pre-purchase option for Full Self Driving from the config options. They said it was too confusing. It used to be listed as a $3000 option, with no promises about when it'd actually be available, but that the hardware for Autopilot is built in and supports FSD, whether you buy either options (FSD requires autopilot though). More recent information is that FSD will require the onboard computer to be upgraded, and that will be free for anyone who pre-purchased.
There's a little more verbiage here if you scroll down to the bottom:
Autopilot
Full Self-Driving Capability
Build upon Enhanced Autopilot and order Full Self-Driving Capability on your Tesla. This doubles the number of active cameras from four to eight, enabling full self-driving in almost all circumstances, at what we believe will be a probability of safety at least twice as good as the average human driver. The system is designed to be able to conduct short and long distance trips with no action required by the person in the driver’s seat. For Superchargers that have automatic charge connection enabled, you will not even need to plug in your vehicle.
All you will need to do is get in and tell your car where to go. If you don’t say anything, the car will look at your calendar and take you there as the assumed destination or just home if nothing is on the calendar. Your Tesla will figure out the optimal route, navigate urban streets (even without lane markings), manage complex intersections with traffic lights, stop signs and roundabouts, and handle densely packed freeways with cars moving at high speed. When you arrive at your destination, simply step out at the entrance and your car will enter park seek mode, automatically search for a spot and park itself. A tap on your phone summons it back to you.
Please note that Self-Driving functionality is dependent upon extensive software validation and regulatory approval, which may vary widely by jurisdiction. It is not possible to know exactly when each element of the functionality described above will be available, as this is highly dependent on local regulatory approval. Please note also that using a self-driving Tesla for car sharing and ride hailing for friends and family is fine, but doing so for revenue purposes will only be permissible on the Tesla Network, details of which will be released next year.
Hope this helps!
