Increasing the fuel efficiency of hybrids

While most engineers are struggling to increase the fuel efficiency of cars by fractions of a percent, there is an obvious place where big gains can be made while improving handing: turning. Turning wastes about 6% of total energy used by a car, since two of the wheels have to slow down, while two speed up. (The wheels on the outside have to travel further (that is spin faster) then the wheels on the inside.) Now then some hybrids have independent drive motors for each wheel or at least the back two, if you use the regenerative braking to slow the wheels that have to go slower, you recapture some of the lost energy and the car turns better (it won’t turn like a tank (tanks can turn inside there own radius) but it should be noticeable better.) You can’t get all the wasted energy back but it should be enough to make it worth implementing (the steering improvements alone should justify the implementation.)