As much as I’m intrigued by the whole idea. As long as there’s a gas alternative for about the same price. I’m going to wait awhile. I was initially captured by the performance of electric vehicles. So I’m on the wait and see list.
How accurate is the pump?
How much actual fuel is in the tank before the pump was triggered off by air/fuel/bubbles/turbulence in the filler neck?
Even if you use the same pump at every fill up, it could still sway the average to be off by the pump's calibration.
Bottom line, the volume in the tank is not known (exactly) the volume added to the tank is not known (exactly).
Further, how is idle time captured, fuel is being lost but the miles aren't increasing? A bunch of idling would show a lower MPG than what the vehicle achieves going down the road.
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