Doesn't Tesla have a valid HPWC wiring setup with only 3 wires? Assuming that is still the case, you could use the wiring for it to install a Tesla HPWC (the HPWC would need to have it's max amperage set appropriately to match). Another option, and something I use, is a J1772 L2 charger that can plug into a NEMA 6-50 outlet. This is nice if you want to be able to charge any electric car at a decent overnight rate without using a mobile charge cord. They are usually limited to maybe 30 amps 240 volts, but that is still fast enough for overnight charging. The GE Wattstation is one example of a J1772 charger that had (and may still have) a plug in version that plugs into a NEMA 6-50 (the GE Wattstation has been really good; my only minor complaint is that it does buzz a bit when charging).
With a J1772 charger you still need an adapter for a Tesla, but you don't have to drag out the whole UMC to charge.
That's my input, though only of interest if you don't want to have to futz with a mobile charge cord.