Except the vehicle has made weight reductions elsewhere, including engine, transmission, emissions control, fuel tank, etc. A typical useful payload is around 4

Except the vehicle has made weight reductions elsewhere, including engine, transmission, emissions control, fuel tank, etc. A typical useful payload is around 44,000pounds still keeping under the 80,000pound limit, and the Tesla Semi was able to do that (electric trucks are allowed ~2000pounds extra).