I think that's exactly what the likes of Nikola and Tesla are doing with their trucks. From what I understand, battery electric trucks exist in pretty much eve

I think that's exactly what the likes of Nikola and Tesla are doing with their trucks. From what I understand, battery electric trucks exist in pretty much every size and weight class right now ranging from huge dump trucks used in the mining industry, long range trucks to more medium and small size trucks. Hydrogen may have a role to play with some of these. But the decision as to use hydrogen is more a cost consideration than it is a functional necessity. The reason there are not a whole lot on the road is that cost wise, it doesn't make that much sense to go for hydrogen. Hydrogen is expensive to source, difficult to handle, there hardly any fueling stations, you need complex systems on the truck, heavy tanks, etc. It adds up to a lot of cost and limitations for not a whole lot of benefit. As for this particular truck, it does not look like it's particularly impressive in terms of torque, range, etc. 400km range is well below the 500 mile range that Tesla is advertising for the Tesla Semi (with a ~500kwh battery). That's 2x the range (and a bit). The normal range also has a better range with about half the battery. What is interesting is that hydrogen fueling takes a bit of time. It's not like fueling a truck with diesel. You need to squeeze a lot of hydrogen through some heavy duty pipes at very high pressure. That takes time. People always complain that charging batteries takes so long. Well, 20 minutes of fueling time for hydrogen is also substantial and at the lower end of the scale of what a lot of EVs can do in terms of 0 to 80% charging already. There are already chargers being designed that will charge trucks at over 1MW. So, if you have 500kwh of battery, you might get it charged in about 30-40 minutes. That's a lot of range depending at what rate you are cruise (typically nowhere near the maximum capacity of the motor). Another interesting aspect is that these hydrogen trucks have a 72 kwh battery. That's because fuel cells are not that easy to throttle up and down. So, instead it's basically a battery electrical truck with a smallish battery and a complicated hydrogen generator. Swap it out for a diesel or petrol engine and you have a hybrid truck. Swap that out for a proper battery and you have a proper battery electric truck. Same engine, just a larger battery and lot less complexity. The reason the battery is relatively large is because they are powering a 350kw motor with a 160kw hydrogen setup. It would not be able to operate that engine at its full power. And when you are driving up a mountain, you need a bit of a buffer since you are depleting faster than you can charge it so it needs to be able to sustain high power levels for a bit.