A vehicle body structure is provided with a vehicle body member, a charger, a structural support member. In one aspect, the composition exhibits a regenerated first response to the first electromagnetic radiation after exposure to a third electromagnetic radiation. A service definition for a selected one of the services is retrieved and provided based on the retrieved and provided services associated with and properties for the selected one of the plurality of instances of things. A secondary early decision generator generates a secondary early decision output. The pressure-difference generating module, connected to the first sub-chamber and the second sub-chamber, generates a pressure difference between the first sub-chamber and the second sub-chamber, and drives the elastic driving module to move and thus to drive the mold to move and press the specific-light-cured layer. A method of determining object speed of a linearly in-motion object, useful for determining object dimensions, is also disclosed.