Abstract: Arrangement of central load-carrying tube of motor vehicle chassis with integrated rotary electric motor, method of its placement and use, wherein one or more rotary electric motors (1) are placed inside the tubular structure of the central tube (2) of vehicle chassis. Advantageously, the tubular structure of the central tube (2) of vehicle chassis is further fitted with traction components (5), (6) and (7), which, together with the rotary electric motor, form a compact unit. Use of central load-carrying tube (2) according to claims 1 to 6, fitted with rotary electric motor (1) and traction components, as a chassis of the road, commercial and military vehicles.