You get free unlimited supercharging with the new Tesla model S or X (again)

One of the great early selling points of the Tesla Model S was free, unlimited access to Tesla's Supercharging network. After being limited to referrals before being fully accepted, free lifetime Supercharging is back for all new Tesla Model S and Model X.

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According to a tweet from Tesla:
It is unclear if this is a limited time campaign or here to stay, but we have reached out to Tesla and will update with further comments.
Tesla has used unlimited Supercharging as an incentive before, offering it on used Model S and Model X fixtures. In this case, the company may push buyers toward the flagship products instead of Model 3.
Sales of the Model S have fallen this year, no doubt in part due to the increased focus on the Model 3 and a certain degree of cannibalization of the smaller car. Model X sales are still up this year, as it is currently the only Tesla SUV.
As more and more high-range EVs hit the market, Tesla's Supercharging network is becoming more important. As other companies have struggled to put together high-quality charging networks, Tesla's Supercharger network continues to grow. Free, unlimited use of reliable, high-speed chargers makes it easier to install an electric car in your life.