A powertrain for supplying torque to a drive wheel and an additional drive wheel of a road vehicle, wherein the powertrain comprises: (i) a combustion engine having an output for supplying torque, wherein the combustion engine is a reciprocating internal combustion engine; (ii) a drivetrain for conveying torque from the combustion engine to the drive wheel, wherein the drivetrain comprises: (a) a torque converter having an input coupled to the output of the combustion engine for receiving torque therefrom and an output for supplying torque, wherein the torque converter has a first state of operation and a second state of operation, the torque converter is configured to provide a mechanical coupling between the input and output of the torque converter in the first state of operation and a fluid coupling between the input and output of the torque converter in the second state of operation, and torque supplied to the input of the torque converter is conveyed to the output of the torque converter in the first state of operation and in the second state of operation, wherein in the first state of operation the input of the torque converter is locked to the output of the torque converter for avoiding slippage there between, and in the second state of operation the input of the torque converter is not locked to the output of the torque converter for allowing slippage there between, and (b) a final drive having an input coupled to the output of the torque converter for receiving torque therefrom and an output for supplying torque to the drive wheel and an additional output for supplying torque to the additional drive wheel, wherein the input of the final drive is coupled to the output of the torque converter at a fixed gear ratio, and wherein the final drive comprises a bevel gear and a differential for allowing the drive wheel and the additional drive wheel to rotate at different speeds; and the powertrain further comprises: (iii) a first electric motor configured to supply torque to the drivetrain between the final drive and the drive wheel, and a second electric motor configured to supply torque to the drivetrain between the final drive and the additional drive wheel. (i) a combustion engine having an output for supplying torque, wherein the combustion engine is a reciprocating internal combustion engine; (ii) a drivetrain for conveying torque from the combustion engine to the drive wheel, wherein the drivetrain comprises: (a) a torque converter having an input coupled to the output of the combustion engine for receiving torque therefrom and an output for supplying torque, wherein the torque converter has a first state of operation and a second state of operation, the torque converter is configured to provide a mechanical coupling between the input and output of the torque converter in the first state of operation and a fluid coupling between the input and output of the torque converter in the second state of operation, and torque supplied to the input of the torque converter is conveyed to the output of the torque converter in the first state of operation and in the second state of operation, wherein in the first state of operation the input of the torque converter is locked to the output of the torque converter for avoiding slippage there between, and in the second state of operation the input of the torque converter is not locked to the output of the torque converter for allowing slippage there between, and (b) a final drive having an input coupled to the output of the torque converter for receiving torque therefrom and an output for supplying torque to the drive wheel and an additional output for supplying torque to the additional drive wheel, wherein the input of the final drive is coupled to the output of the torque converter at a fixed gear ratio, and wherein the final drive comprises a bevel gear and a differential for allowing the drive wheel and the additional drive wheel to rotate at different speeds; (a) a torque converter having an input coupled to the output of the combustion engine for receiving torque therefrom and an output for supplying torque, wherein the torque converter has a first state of operation and a second state of operation, the torque converter is configured to provide a mechanical coupling between the input and output of the torque converter in the first state of operation and a fluid coupling between the input and output of the torque converter in the second state of operation, and torque supplied to the input of the torque converter is conveyed to the output of the torque converter in the first state of operation and in the second state of operation, wherein in the first state of operation the input of the torque converter is locked to the output of the torque converter for avoiding slippage there between, and in the second state of operation the input of the torque converter is not locked to the output of the torque converter for allowing slippage there between, and (b) a final drive having an input coupled to the output of the torque converter for receiving torque therefrom and an output for supplying torque to the drive wheel and an additional output for supplying torque to the additional drive wheel, wherein the input of the final drive is coupled to the output of the torque converter at a fixed gear ratio, and wherein the final drive comprises a bevel gear and a differential for allowing the drive wheel and the additional drive wheel to rotate at different speeds;