Yeah but when you finished the trip and parked what was your actual fuel usage? When you do the same thing going down a long hill in an EV the energy is being harvested and put back in the battery,the truck is getting the brake rotors and pads hot instead.
Both Grumpy and I have seen almost 5 miles per KWH at the vehicles best and that is for sustained driving in good summer weather. EV's have a broader best to worst energy usage for sure, winter they do use way more energy, but summer can get some pretty great efficiency.