Let's start by being quite absolutely clear that there is no existing range of the Tesla truck, this is a marketing stunt from a man with an inarguable history of conducting bogus marketing stunts and outright lies. If one day the Tesla car company produces a vehicle based around this marketing stunt it will bear as much resemblance to the concept as clothes in Kohls resemble fashion show concepts. We can't talk about the existing range of the Tesla truck because there is no existing Tesla truck and the guy could say literally any number he wants when talking about what it might someday do.
The reason fueling time matters is because the behavior of actual people in the real world differs slightly from what you might ask an idealized servant to do and when you scale numbers up small differences can turn scary really fast.
Take for example supply chains like Ford's F-series - they sold a million of those last year which means that if some failure to deliver a part cost them eight hours they would have a production back-up of 1000 vehicles which means all the parts suppliers delivering all the other parts toward the assembly lines would need to find a place to store 1000 vehicles worth of that part, all the way back up the supply chain.
So if you look at the supply chain of the I-70 highway across the Rockies they get approximately 22000 vehicles per day headed up the hill (that's just based on cutting the reported average of 44k in half) and if we make 10% of those electric (isn't the goal here 100% though?) and we say that 90% of everyone arriving there somehow managed to have plenty of battery capacity to go up the hill and regen all the way back down to Denver (and all of them have the discipline to not "top up" before the climb) ... so only 10% need to fill up in Grand Junction that's still 220 vehicles per day that need a fill up, which - if they're kind enough to arrive at evenly spaced intervals around the clock is still 9 vehicles per hour that need a pretty significant charge. Can they get their ~500kWh charge in an hour by delivering 500kW (!) to 9 vehicles at a time, around the clock? That's 4.5 megaWatts even if we generously forget that thermodynamics takes its share. Or if we can't deliver 500kW per vehicle because that's some "one point twenty one jiggawatts!!!" madness then the vehicles are going to stack up... and since they don't stop coming they're going to stack up a lot. A lot a lot. How many of them are going to get stuck in the traffic jam with their heat or a/c running and use up all their battery and also need an unplanned charge? Then what do we go send a whole bunch of very-diesel-powered earthworks machines to dig up half of Colorado clearing wilderness habitats to make solar farms and refine millions of miles of steel and copper to make high tension poles and cables to deliver all this power? Is that how you save the environment?
As before, I'm not opposed to electric vehicles in principle. I'm prone to do a little napkin math now and then to determine how far outside the ballpark something is.
