Powertrain for auto-traction and road motor vehicle provided with such powertrain

A powertrain for auto-traction comprising an electric drive unit that comprises:

• an engine-block with a rigid structure;
• a drive shaft, which is at least partially housed within said engine-block with the capability of rotating about its longitudinal/central axis;
• a series of rotating electric motors, which are oriented transversally to said drive shaft and are arranged adjacent to each other within special accommodating seats made in said engine-block next to said drive shaft, so as to form at least one row of electric motors;
• and
• a gears train, which is housed within said engine-block and is structured so as to mechanically connect said electric motors to one another and to said drive shaft, in order to allow said electric motors to jointly drive into rotation said drive shaft.