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Technically Chademo only requires DC charging enabled. Supercharger access also requires DC charging. It is possible to have DC charging without supercharger access - it used to be an option on S60 where you could save a little money and enable only DC charging, but the saving was small (after deliver it was something like $2K for DC, $2.5K for DC+supercharging). Because the price difference was so small, I suspect there aren't many of those S60's out there with DC charging but no supercharging.