Some dumb*ss wrote this little blurb up. He/ she probably doesn't know a thing about the topic at hand but responded to a video regarding the Frito-Lay Semi's:
I possess significant knowledge on this topic.
A modern weight sensitive day cab tractor weighs about 16K
#s with enough fuel to travel 500 miles.
A day cab aero tractor in CA (commercial speed limit is 55mph) will easily average over 8 mpg. Getting mid 8's is very doable in that environment. In fact I've seen over 9mpg. My experience mostly in construction has the trucks literally loaded on scales within 200
#s of legal limits, but OTR loads seems to be well below that at times (also, not my experience) so I'll defer to the stats that most loads are cubed out not grossed out.
The Class 6 EV trucks from competitors weigh 5K
#s more than the diesel version (not a made up number). I'm going to guess that at a minimum the Class 8's weigh 6K
#s more than a diesel Class 8 losing net 2 tons of legal payload, a not insignificant portion of the payload in a notoriously low margin business. I'd expect the same out of the Tesla Semi. Not a huge deal hauling potato chips, but definitely an issue hauling sodas. As in I'm certain you'd lose >10% of your payload of sodas so would need to run an extra load every 9 loads to just make up for the payload loss.
The competitor's EV Class 8 products reportedly cost >$500K for a Class 8 Tractor (google can confirm). Tesla would be idiots to sell for 1/3 of that cost and that math doesn't work just knowing what a Class 8 chassis costs plus the battery pack costs.
Fresno electricity cost is 28 cents, San Diego is 39 cents. Average 33.5 cents if Frito Lay charges equally at each point on the route.
Average diesel price in CA is $5.65/ gallon but if you set up an on site tank you can take about 30 cents off (minimum for a large customer!) which only seems reasonable compared to building actual multiple million dollar superchargers. So that's $5.35/ gallon.
So the diesel truck getting 8.5mpg at $5.35/ gallon cost $332.35 to drive 500 miles (in fuel costs). The Tesla Semi getting 1.7kw/m at 33.5 cents cost $284.75 in electricity, except that isn't correct either because fast charging costs 15% in charging efficiency, so $327.46 in electricity.
So you saved $5 in fuel cost for the trip, but lost payload, flexibility, spent 2-3x more in acquisition costs , spent millions on charging stations, have essentially no resale to the owner operator market, and in reality have less reliability than the well developed diesel products from the established manufacturers.
I'm VERY pro-EV for personal transport, but sorry, don't see it for trucking for DECADES in any significant capacity.