In this paper, key aspects of silicon-carbide (SiC)-based automotive traction drives are reviewed. Firstly, the required supporting factors to achieve optimal operating conditions and best performance are described. Major component sizing methodologies and constraints are included. Expectations on gate threshold voltage, trans-conductance, and transient oscillation are discussed. Tolerance against extreme operating conditions like avalanche breakdown, short-circuit conditions are answered. Requirements on gate oxide and body diode reliability / durability for automotive applications are examined. Finally, acceptable SiC costs for automotive applications are discussed.