Are all the Tesla Charging Stations superchargers? I mean, could an owner stop at any Tesla charging station and receive the 80% full charge in 30 minutes? Do all the Tesla charging stations also have a 240V J1772 charger also? Are the Tesla superchargers free to Tesla owners? Thanks for the responses.
There are:
Superchargers - Tesla DCFC
HPWCs (High-powered Wall Connectors) - 80A-capable Level 2. It's a J1772 with the Tesla connector. (It's actually cheap for what it offers).
There's only a few Supercharger locations where there's also a J1772 with them.
Tesla has a destination charging program where host locations can get 2 free HPWCs. (They're cheap for what they offer; can be linked to allow power sharing).
There's a few of the oldest Superchargers that are limited to 90kW.
There are also a few temporary Superchargers that are also at lower power.
Superchargers are free at point of use to S and X owners. (There are some special exceptions that can be ignored.)
Superchargers will not be free at point of use to Model 3 owners. There will be charges to a credit card associated with the owner's Tesla account.
Price depends on the state or country. (Due to varying laws, some are per kWh, some are per minute (depending on <=.60kW or > 60kW; they prefer per kWh).
https://www.tesla.com/support/supercharging
The exact details are up in the air. For the S and X Tesla said it'd be 400kwh included per year, but went back to free Supercharging with a referral (which everybody can get). For the Model 3 someone on the Tesla Motors Club forum posted that they'd been told that they'd get a one-off free 1,000kWh at purchase. Tesla's probably still figuring whether to have a free yearly amount and what it should be.
https://www.tesla.com/findus has a map of current Supercharger locations, future Supercharger cities (those gray markers just indicate the city, not the exact locations), destination chargers and stores and service centers. You can change the selections so the map just shows the HPWCs (Destination Charging) or Superchargers or both.