2019 Audi e-tron quattro prototype drive - On a special dynamic handling course laid out on Bitterwasser’s Salt Pan, we were able to drive the e-tron quattro at speed while trying out the vehicle’s specific all-wheel-drive system. As this is an electric vehicle powered by two separate motors, electronic components play a key role in apportioning torque where it is needed, and selectively braking independent wheels as required in order to maintain stability.