Body wall lining panel for a vehicle passenger compartment

A lining panel (1) covers a body wall (19) of a passenger compartment (17) of a vehicle (3), and defines a floor (22) or a side lining (34); the lining panel (1) has a multi-layer structure in which at least one sheet is embedded, the sheet defining an electrical capacitor which forms part of an electrical system (4) for electrical propulsion of the vehicle (3).