1. A running locus generating method of generating a future running locus of a vehicle driven by a hybrid scheme, the method executed by an Electronic Control Unit, the method comprising: computing a running locus that satisfies a constraint condition including at least a road boundary condition by a convergent computation; and deriving a final running locus by a convergent computation with an evaluation function using the running locus satisfying the constraint condition in an initial convergent computation while the constraint condition in the computing the running locus step is satisfied, wherein the evaluation function includes at least an evaluation of an electric power balance in a hybrid system when the electric power balance is in a positive state.