I like it. You could sell it as a safety item. With this white noise generator no distracting cell calls/texts while driving. ;-) Radio? Just hook up your MP3 player or smartphone and play some recorded playlists...
http://www.home.agilent.com/en/pd-1000001300%3Aepsg%3Apro-pn-346C/noise-source-10-mhz-to-265-ghz?&cc=US&lc=eng