The BMW M5 (an example of exactly what the Model S is competing against) already does this, because the interior cabin is so well insulated that you can't hear

The BMW M5 (an example of exactly what the Model S is competing against) already does this, because the interior cabin is so well insulated that you can't hear the turbocharged V-8, and owners want to: http://reviews.cnet.com/8301-13746_7-20111031-48/bmw-m5-generates-fake-engine-noise-using-stereo/ http://reviews.cnet.com/8301-13746_7-20111031-48/bmw-m5-gene...