MultiDepotOpenVehicleRoutingProblemwithsofttimewindowsisavariationof theVehicleRouting Problem con- strained by multidepot and soft time windows, which isa typical NP-hard problem.
That's why Vander Haak was open-minded when the Vehicle Research Institute at Western Washington University, just down the road from his dairy, called with an offer to truck away some of his methane.
VOA: standard.2010.02.23
He opted for the open-top vehicle instead of the bulletproof popemobile Mercedes that was typically used by his predecessor.
Early in the day Pope Francis glided through the square in an open-top vehicle amid a sea of colored banners, including the white and sky-blue flag of his home country of Argentina.