A four-wheel shopping cart includes a substantially rectangular base surrounded by vertical side, front and rear walls to form an open-topped, cargo basket. Advantageously, the coatings of the invention do not require pre-activation to achieve high initial photocatalytic activity against pollutants in the air, such as NOx compounds. The contacts are formed against and abutting the alignment rib, thereby ensuring coplanarity of the contacts for surface mounting to a circuit board. The shaft of the rotor of the electric machine being placed radially outside the brake rotor and extending axially from the reduction means toward the interior of the vehicle. In some examples, user devices translate the pseudo-pilot signals into their correlated locations. The system comprises a transmitter and a probe, configured to guide transmitted microwave energy towards the content.