No, they didn't. From the details page: "We've assumed a fuel economy of 20.0 miles per gallon for a comparable gasoline powered truck. We've also assumed the national average of $0.16 per kilowatt-hour for residential electricity (assumed for 100% of charging) and $3.30 per gallon for gasoline over the next three years."
And in CA, it's $0.30 per KWH, so extremely misleading if you are there - which most of the purchases will be at.
Also in CA that price is going up 5% per year.
OTOH CA doesn't have $3.30 gas prices either.
Even at $4 or $5 that's not twice $3.30.
SF Bay area gas prices are just under $6/gallon.
I've been filling up with e85 gasoline for $2.99 a gallon in California. not sure how common vehicles are that can run on e85, but mine is a 2007 model.
In the UK that's more like $0.45 and in Germany $0.60.
For home electricity? Maybe during the peak of '22, certainly not now: I pay around 0.25€/kWh on average per month via Tibber in Germany. Most new contracts are closer to 0.28€/kWh according to the Zeit Energymonitor at the moment.
$4.66 for a gallon of gas but it's up to $0.50/kWh peak rate in San Francisco.
And in Georgia you can get EV charging at home for as low as 1.7 cents per KWH. Unless they're going to let you enter your zip code and use a national power company rate database along with local gasoline prices, using the national averages seems reasonable.
I charge my EV at an overnight rate of $0.09/kWh or $0.16/kWh off solar during the day in San Diego. But gas is $4.50-$6 a gallon.
Also in CA they are charging income-based surcharges. For now, these are not tied to usage, but I wouldn't be surprised if in the future they were.
No, they factor in the cost of charging, both at home and at a supercharger, when they calculate estimated gas savings.
Oh come on... what's a little fibbing among friends?
I heard that if you buy a Cybertruck Elon will personally write you checks for your increased electrical usage. I'm sure it must be true.