Another option is just stick to a smaller circuit.

80% of 15A x 120V = 1.4 kW

80% of 20A x 240V = 3.8 kW

Just going from a standard 15A outlet to a 20A/240V nearly triples the amount of power, and many homes that would need a new panel for a 50A charger have room for one more 20A circuit. Cars typically spend 8-16 hrs per day stationary in their own driveway, so 3.8 kW translates into tons of range.

While 40A or 50A is nice to have, it's far from necessary.