In the Interchangeable World of the MIcronauts, a "Motorized Vehicle" is a term referring to the presence of the Torque Twister Motor, rather than electric power. Early Motorized Vehicles routinely included a Micronauts figure (always a Time Traveller). The motor was always silver in these early versions; later versions were frequently white.
Later vehicles with the motor lacked the words "Motorized Vehicles" emblazoned on the box. They are nonetheless included in the category, whether or not they were labelled as such, contained a figure, or used a white casing for the motor body.