Apologies if this has been answered already; the forum search hasn't returned much. I currently have 1 HPWC at 40 amp. This is all I can do without a costly upgrade to my house and this is more than enough for the amount of commute we do, but sharing the plug is not very convenient. Now, I would like to add a secondary HPWC to be able to plug both cars at the same time. I would like it to be automatically powered off while the first car is charging and turn on when the first car is done charging. It should work similarly to the Dryer Buddy, where the dryer and a car charger can share a single 240v outlet and work in a sequence. I wonder if some sort of standard solution exists that allows two devices to work in a sequence. Has anyone done this for your 2 EVs? Thanks!