EV's cannot practically tow or carry a lot of payload. The batteries do not have enough energy density. You might as well buy a Toyota Prius or Nissan Leaf.

Electric motors have a great torque curve that doesn't cut out but the size of the motor required to pull a load and the energy required to turn the motor is a different question.

The main benefit is you get an increase in torque on an electric motor until you reach it's peak meaning you can put just about any load on the motor (however prolonged over torque can burn out the motor) whereas with conventional fuel driven motors the motor can stall out without building up the momentum through gearing.