[Joel_MD]

I tried a Google search using several combinations of the keywords rental, cummins, fleet, lawsuit, etc. I am usually adept at keyword and other Boolean searches, but I could not find anything relating to fleets with 6.7L engines. If anybody else finds anything about this, please share with the forum.

As for what Welder73 says, you shouldn't have to drive at highway speeds for 45 minutes for the regeneration process to work. It probably works best at highway speeds, but my 6.7L Cummins will regen at almost any speed. Idling for more than about a minute will interrupt the regen, as will foot-to-the-floor accelerating. I would think that extended idling at a jobsite would not be too bad for the engine as long as you operate it at normal speeds once in awhile.