Just out overhead wires over the interstate and the trucks can charge/draw juice from the grid that way. Bus routes in many countries still use that (Seattle and SF for the states, probably some others, and of course trains in Europe and Asia.

Trains in the USA mostly use diesel turbines to generate electricity that is then used to move the train. You could do the same with a truck, although I don’t think it would pay off the same as it does in trains.