The old Diesel engine and transmission can be removed from an old semi truck (glider) and replaced with a New Engine with simple high/low/reverse gears. The old drive shaft can be used with old differentials. Basically all of the old "glider" body and hood can be used with ~ 1.8-3 times better fuel economy. Cost is ~$70k for old glider + new engine.
Each axle can have it's own power system with multiple motors and compressors for redundancy for each axle. With a conventional USA semi tractor, the engine can be 3-4 times higher power (1600-2000 hp) for greater acceleration. The RPM range is 0-4200, not the 900-1800 in old Diesels. The climb ability is 6% at 80 mph, 80k lbs.
Brake recovery is used to recovery brake energy during decelerations. Unlike a Jake-Brake that dissipates the energy, the compressors stores the energy to be recovered and used later. During long hills, excess energy is vented off and lost depending on tank sizes and hill length. Usually 4 compressors, two each axle, are used.
The acceleration would be sized for 80,000 lb and 0.15 G's, 0-60 in 18 seconds, 2 less than Tesla. It can be much more, if Tesla wants to play that game. It does not affect fuel economy, unlike old Diesel trucks. There is also a 15,000 lb lower weight for the tractor compared to a Tesla BEV, thus giving 15,000 lb greater load ability per 80,000 lb load over a BEV and around 5,000 lb advantage over old Diesel truck. An all new semi truck tractor would weight around 10,000-12,000 lb and have many interesting new features.
The engine system is like having several independent engines working together. Should one fail, the other systems can continue driving with them disabled or shut down in part or whole. This eliminates most all brake down, except for flat tires and running out of fuel. Axles can be turned off in the cruise, lowering wear on the engines.
One small motor (found in cars) is used for micro power for night heat/cooling and electricity. Makes stops nice and comfortable.
1,000,000 miles between overhauls.
Instead of only Diesel fuel, many fuels can be used. This greatly depends on supply and costs. The fuel chosen is best cost per energy and not per volume. Gasoline, Diesel, Jet fuel, Ethanol, Methanol, etc can all be used if the supply is able. Propane tanks would be required to carry NH3 and propane. Electro fuels from Solar can be used, such as NH3, C8 or C10. Range is 3200 miles on 300 gallons. Fill time is standard 60 gallon/minute or 5 minutes, compared to 4-5 hrs for a BEV Truck.