Porsche's own manager for energy and the environment has tactfully stated that the European Union's emissions target is undesirable and possibly even unreachable for Porsche, though its prototype hybrid powertrains are still in the works.
At the 2007 Los Angeles International Auto Show, a Porsche executive announced to the gathered press that even if all Porsches on the road today were simultaneously switched off, there is no instrument in the world sensitive enough to measure the environmental impact of that action.