I drive an entry level EV (Hyundai Kona) that advertises 4mi/kWh, which is roughly accurate (2-3 in the winter, 5-7 in the summer). That’s 25 kWh for 100 miles.
Average cost of electricity in the US is, according to a quick Google, somewhere between $.15 and $.25 per kWh; where I live it’s a steeper $.33.
Therefore, depending on where I charge, I’m paying anywhere between $3.75 and $8.25 to drive 100 miles–$1.50 short of the article’s published $9.78 even with my expensive power.
In reality, though, I pay nothing–my office offers free charging. Show me an office with free gas.