http://thefraserdomain.typepad.com/energy/2007/03/the_need_for_bo.html#comment-62901932

Large trucks can be converted to plugin serial hybrid too. Railroad locomotives and mining equipment are serial hybrids already. They have diesel generators driving electric motors without transmissions.

For long haul trucks add induction pickups and charging lanes, that way an hour or so driving in the charge lane can recharge the batteries. Also fuel cell/turbines instead of diesel generators, 3 times more efficient.