A wheelhouse cladding step assembly includes a step movable between a closed position and an open or deployed position in which the step is located proximal the wheelhouse of the vehicle and provides improved access to the roof andor rooftop cargo storage of the vehicle. In one aspect, a device and method for capturing and detecting intrinsically magnetic target objects or target objects labeled with at least one magnetic particle within the area of interest using an in vivo flow cytometer are described. It is formed by impregnating an electrically insulant woven fibre with a sealant, and curing to form the cloth. Contact between the ramp and the latch member when the door is being closed against the housing causes the latch member to move to an unlatched condition so as to automatically align the latch member to a latch aperture. Following this, a thin layer of silicon is bonded to the silicon nitridesilicon oxide layer. The automated selection process may include a weighted random selection routine.