A three-wheeled motor vehicle includes a main body, two shafts, two wheel bases, a blocking structure fixed to the main body and a linkage module. The predicted signatures take into account the known anisotropy of reflectance, and thus also radiance, of the candidate material. In one embodiment, the catalyst precursor further comprises a cellulose-containing material. A third rotatable roller, or similar apparatus, may be included in some embodiments, for pushing the sheet of material away from the vacuum conveyor at the appropriate time.