porsche active aero

You know how come porsche's have the active aero system like the vr-4, i think the carrera coupe and turbo have it among others, did we steal the idea from them, or vice versa, or was there some other orgin for this???

I am also interested in who came up with this idea of "active aero". It was probably of German origin like the turbo and the rotory engine. besides the Porche and VR-4 there is also the VW Corrado, the Ford GT-90 concept, the Bugatti Veyron 16.4, the Lamborgini Murcielago and Gallardo and the Chrysler Crossfire. all of these cars have active aero.