Yup, just had that conversation on the Facebook Zero owners group. Sounds like these people found a way to charge at 400v, then convert it to 120v for storage.
I'm not sure about that .. charging to 80% takes 40 minutes on the 15 kWh bike .. at 125A that sounds about right for charging a 120V battery (~15 kW ballpark).
They're certainly not doubling the voltage and then transforming down. Seems like a lot of complication vs simply asking for the correct supply voltage, assuming the CCS chargers can drop down that low.
Still .. level 3 charging on a sub-$35k bike is pretty exciting! Even without any aero treatment, 168 miles is a lot of range. I haven't read details of the test spec but I suspect that is constant highway travel. Supercharger-equipped bikes are probably still ultimately better for road trips given the current state of CCS charging in the US, but that will change very soon with new CCS vehicles.
I hope this instills a sense of urgency into Zero to offer a true L3 charging solution.