Before revision:  Numerical examples show the robustness of the method and that it converges at order one in energy norm similarly to the usual Lagrange P2-P1 mixed element. Also, the robustness of the method with respect to the incompressible limit \nu 0.5 is proved numerically .
After revision:  Numerical examples show the robustness of the method \nu 0.5 is proved numerically .