Gen 3 Wall Connector - Multiple Units on a single circuit

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Stupid question, but do you really need two? Are you driving and draining both cars daily? We had three electrics for a while (two Teslas and a Rivian), and charged them all off one wall connector, just cycling through the parking spot as necessary.

Both cars are driven daily. Sometimes both cars are parked inside and sometimes one car is parked outside. The shuffling of cars is a PITA. As a stop gap, I'm just gonna buy the current Gen 3 WC with the 24' cord, swap the fronts this weekend. that should allow the other car to reach from the existing location (I measured and it should have just enough length... By a foot or so fingers crossed). But since I am going to buy another WC anyways, might as well install both of them. Materials to install the 2nd WC are minimal <$150. This way I also eliminate a trip hazard of the cord going all the way across the garage and have the convenience of two chargers.

We drove both daily, but we didn't drain both daily. So we'd just talk to each other and decide who would plug in on a given night. With few exceptions, we never had to do the shuffle. But sounds like you have a plan! :)

Can you do tandem breakers on your panel to free up space? Some breakers also let you have two circuits on a single breaker, so if you have two circuits that are low load, you could put them on the same breaker. I'd explore that before doing the Polaris thing. I considered it, but the Polaris stuff gets such mixed reviews especially with a continuous load like a car charger. A couple tandem breakers solved my problem and I just ran two 220V circuits.

Unfortunately... Can't do anymore tandem breakers. Panel is really full. When I had Tesla solar installed they swapped a couple of full size breakers for tandems already and the CT for measuring the current in the panel took up a significant amount of free space. Good point about the Polaris connectors. I suppose I could install a sub panel (main lug) and feed it with the current 50 amp breaker in the main panel. That might cost about the same as buying a couple of Polaris and I would have options to let's say add a 20 amp outlet. (I have some infrequently used 20 amp devices (table saw, compressor) and I have to run an extension cord to the laundry room inside the house and unplug the washer to use them which is the closest 20 amp circuit.)

This is what EV power switches are designed for. The switch plugs in (or is hardwired to you panel). Your chargers plug into the switch. One switch is the primary and the other one the secondary so you can charge one, then charge the other and you don't have to worry about a panel upgrade.