With the upcoming CHAdeMO-charging Station, offering up to 50kW or even the new Tesla Quickcharger with up to 90kW, this all make it to be of interest to the current Roadster Owner to take advantage for the DC-charging too. There is only a minimum on hardware required, most is done by the software and the communication via CAN-bus. The Roadster already owns a CAN-bus- What is needed to do? Put a CHAdeMO socket in the trunk, wire to the ESS and CAN-Bus. Attache a micro-controller to the socket to convert CAN-bus commands to control-signal for the socket? This can be don quite cheap, because no expensive charging hardware is needed. Will cost no more than an UMC-Cable which is doing a similar job on the AC side, simulating an EVCS and switch the power on/off. What to you thing? charging the Roadster to 80% within 1h on 50kW?