With Korea choosing CCS1 as its national fast DC charging plug standards, Tesla announced it would build a CCS1>Tesla adapter for Tesla's in the Korean market.
With Asian mfgs turning out the adapter piece ($200 in EU), it should be available to US Tesla owners in earl 2021 also.
"In the first half of 2021, Tesla Korea will officially launch the CCS 1 charging adapter."
"Tesla owners can conveniently recharge their vehicles at 33 Supercharger stations located at the heart of transportation, and more than 150 Destination chargers located at popular hotels and restaurants. In addition, the CCS1 charging adapter is released to enhance the customer experience by allowing access to public charging networks nationwide."