Did you ever try the real autonomy game? Just consider that in winter you can count on few hours of Sun let's say one day yes and one no, if you live like me in France south. In those hours you need to run anything together. You have postponed dishwasher, washing machine, you have to cook, heat both sanitary water and reserve for night and early morning home heating, recharge the batteries, car's battery included etc.
For instance to heat enough water to heat my home a single day (~2000 liters at 60℃ to get in the morning at 32-33℃) I need a powerful heat pump, let's say 3kW absorbed. I need ~2kW per home appliance (dishwasher, washing machine, coffee maker, induction for a single pot etc) I might have good enough Sun from 9.30 in the morning to let's say 14.30. Some appliance are very quick (like a coffee maker) but some are not (the dishwasher heat water few times for 8-10' a time over 90' timeframe, the washing machine normally only one time) recharging a massive battery demand both a certain amount of sustained power to avoid unbalanced cells, demand little power for a not that short time to balance them at the end of the charge etc. Essentially I need around 25kW for around 4+ hours per day. Being able to count casually passing clouds in the meantime. Not only. Such system need to be constantly managed to lower quickly and mount quickly the load following p.v. production. Some appliance can potentially and practically (for instance modern heat-pump water heaters are already made to be controlled by some modbus/mqtt automation), some can just potentially (nothing on sale do that, but it's possible), some can't.
Really try the game, including home heating in winter, NOT counting on the grid even for small loads.
how? considering 75 kwh tesla is ~50K. Do you really need more than 75 kwh of storage?