At 7mph you get pretty good mileage.
LOL
of course when you’re sitting (which is a high percentage of their cycle), you get zero mpg, unless you have the engine shutoff feature.
Then you do maintenance like UPS where you replace the starter at every oil change....
No, gas powered cars tend to get the best mileage once they get into high gear and move engine operation to the lower BSFC operating region near the torque peak.