Systems, methods and computer program products match a passenger with a driver for a trip to a destination. The deterioration of the catalyst can be remarkably prevented from proceeding and a continuous and stable operation can be performed for a long time. Each legal document request includes recipient and subject matter information sufficient to create a legal document. One or more of the leadfingers also has an offset portion at its proximal end for increasing the clearance between the leadfinger and underlying heat spreader, increasing the stiffness of the leadfinger, and increasing leadfinger deflection-resistance and spring-back. Multiple candidate track patterns may be ranked based on consistency costs to determine a tentative track pattern.