When both a left rear wheel and a right rear wheel are driven by first and second electric motors, and acceleration slippage occurs at either the left wheel or the right wheel, the acceleration slippage is reduced by decreasing the command motor torque (power drive torque) of the first or second electric motor connected to the wheel at which acceleration slippage was generated. The command motor torque of the first or second electric motor connected to the other wheel (wheel on the other side) on the right or left side that is opposite the wheel at which slippage occurred is increased, thereby making it possible to supplement the decrease in the driving torque of the wheel at which slippage occurred.