If it's just owner operators, I don't think it will make much difference, there's still plenty of company and local drivers to pick up the slack. I agree though, diesel is hellaciously expensive, aren't auxillary power units to reduce idling mandatory now? I drove long haul for a year, a couple years ago, it's a tough gig. I think every body just needs to start conserving in all aspects of their lives because this whole damn world is going to shit real quick.