I guess some US brands offer it too? Even though I know manual is popular in the US. It's kinda funny how the automatic is so popular for cars in the US but not for trucks while in Europe it is the opposite and trucks are automatic and uptil recently cars were manual mostly.
Not true Allison makes pretty standard 6 speed automatics with torque converters that can handle class 8 trucks, look at the 4500 series.
They aren't the most efficient for long haul steady state highway though, Allison introduced a sort of hybrid 10 speed with torque converter back in 2012 for highway use called the TC10.
Other makers of automatics are Detroit, Eaton and Volvo I believe they are all dry clutch designs.
The automatics can have better efficiency do to fast optimized shifting and are of course easier to train. I believe that majority of newer trucks (2015+) are built with automatics now.
Yeah, probably more expensive than a manual but they save gas which will cost much more long term.
https://www.ttnews.com/articles/manual-transmissions-rapidly...
The big elephant in the room is of course the fact that no one can actually explain how you'd make trucks electric. Cabs aren't fitted with dual 300 litre diesel tanks for show - moving 40+ tonnes takes a lot of energy and a battery that would provide a similar range to what we have now would be gigantic, meaning both very heavy and very expensive.
Batteries are not cheap of course. But then the life time consumption of diesel for a Truck is not exactly cheap either and probably buys you a lot of battery and power to charge them. Assuming a million miles (which is what Tesla is shooting for with their drive trains) and a generous 6 miles to the gallon, we're talking about 0.5M fuel cost at 3$/gallon. Your mileage may vary a little of course but it's a nice round number. If you'd buy Tesla 3's at 50K each and stripped their batteries you'd end up with with 10 x 75kwh = 750kwh (and a lot of premium cars). So, lets just say that amount of money easily gets you into mwh territory which fully explains why Tesla can advertise a 500 mile range, which in a truck doing 50m/h is about ten hours of driving, which I'm sure legally requires taking some breaks in the US as well (i.e, plenty of opportunity for charging, just in case you'd bring up range anxiety as a thing).
As the whole point of a truck is to move heavy loads, adding a few tonnes of battery that you would need for this should not be a problem. Torque is superior with electric. I doubt moving 40+ tonnes is going to be much of a problem given that they routinely demonstrate the torque of EVs by having them pull e.g. freight trains, large jets, or whatever. Also, EVs can do regeneration downhill or when braking and they barely use any power when idling (unlike Diesel engines).