Yeah. Consider that your whole truck is limited to 80,000 pounds weight and a typical semi tractor might weigh 20,000 pounds (less for a day cab). Anything abov

Yeah. Consider that your whole truck is limited to 80,000 pounds weight and a typical semi tractor might weigh 20,000 pounds (less for a day cab). Anything above that 20,000 pounds eats directly into your payload. Still, Tesla should be able to hit their 500 mile range figure with a full typical load and without exceeding the 80,000 pound total weight limit. Takes a lot of work to improve the efficiency of the drivetrain (low battery internal resistance, low power electronics losses, very high efficiency brushless motors, low gearbox and bearing resistance), improving aerodynamics (surprisingly many tractors still seem to have the aerodynamics of a barn), extremely low rolling resistance tires (while maintaining traction), and reducing weight of the tractor through improved and optimized materials, optimized design, etc. ...and then optimizing the battery to have both high specific energy and long cycle life (even while Megacharging). It’s actually possible to do this, but it requires careful attention to inefficiency and mass throughout the entire vehicle. A lot like designing a reusable orbital rocket.