Both of those can be solved pretty easily, there's already a fairly strong business of roadside assistance and towing for trucks the operating company could eit

Both of those can be solved pretty easily, there's already a fairly strong business of roadside assistance and towing for trucks the operating company could either contract with a network of those to provide repair or refueling services or just call one from a list whenever a truck breaks down or runs out of gas (the second should be exceedingly rare).