> Does this also factor in operating costs of the vehicle? Especially considering gasoline at $4-7/gallon?

Depends on the vehicle of course. But for me at least, my 5-speed Civic for $2500 is way cheaper over its expected lifespan than a $7000 Nissan Leaf (and the Civic is way more flexible, since it can actually go more than 100km every 6 hours in the winter). At $1.50/L and 6L/100km, I can drive about 50,000km before I spend more on gasoline than the price difference between the two. The actual breakeven math (assuming 21kWh/100km) is closer to about 65,000km when factoring in electricity at ~$0.12/kWh. Oil changes are negligible (I do my own maintenance and oil changes), and a used Leaf is going to have just as many problems (if not more) with "the rest of the car" as a gas car (suspension, steering, brakes, tires, electrics, interior components, not to mention battery pack services).

If you buy a nicer EV than the break even point goes even further out. At least where I am, the EV equivalent of any gasoline car has a breakeven point of at least 50k km driven, usually more.

> Then there’s also the potential scenario of “buyer prefers an EV anyway.”

Entirely fair, but I'd still buy a generator and an EV. Because coupling your house power to your car just seems like a bad idea (to rely on it, at least; if you live somewhere that you never need to rely on off-grid power, then who really cares). For instance, my house has a sump pump that must run every ~hour or my basement will flood, and during storms that gets down to about 20 minutes. If my area doesn't have power, then I can't charge an EV anywhere nearby, and if I'm powering the house off the EV, how am I going to recharge it without my basement flooding?

Fortunately there's a couple (literally 2) gas stations near me that sell ethanol-free 91 octane gas, which has a shelf life of ~1 year. Sta-bil in theory extends that substantially longer. My solution is Sta-bil in the E0 gas, which gets used throughout the year for small engines (lawn mower, snowblower, pressure washer) and the generator if needed. I power up the generator once a month to make sure its battery stays charged and fuel keeps flowing (probably overkill). My power goes out 2-3 times a year, so that combined with the small engine stuff is enough to cycle through the gas in ~1 year, but if it isn't, I'll either burn it in the generator or just run it in one of my cars.

If you live in an area where you can only get ethanol gas, then you definitely don't want it sitting more than 6 months, even with Sta-bil (in my experience). So that means yeah, you gotta cycle through the generator's tank twice a year, which if you live in an area with reliable power, means spending more money than you need to on gas and oil. Also, keep all containers (including fuel tanks) as full as possible, to minimize the amount of air in the container, to minimize the amount of moisture the ethanol can suck out of the air.