Exactly.
I've been researching small, portable car lifts just for changing wheels, light-duty type lifts. I found two:
EZCarLift:
EZ CAR LIFT - FREE-STANDING USE-ANYWHERE CAR LIFT! FAST. SAFE. STRONG.EASY. I've been emailing with the inventor/owner, and he sells a "single unit" unit for lifting one side at a time, but won't work for the Model S (well, it might work.. still unclear).
The other is: Quick Jack:
QuickJack- Portable Car Lift- EZ Portable Car Lift - Ranger Products But they won't sell me "half" of a unit (to lift one side at a time).
I'm looking for something like this, with one jacking procedure, lift up one side at a time so I can swap winter/summer wheels without jacking up each corner one at a time with a standard floor jack (which is what I'm doing now, and is a PIA!)