the vacuum cleaner world that is.
You make a really quiet vacuum cleaner and implement an iPod dock and speakers.
and then you sell it by making a report about how you clean your house faster, more thorough and you also loose weight doing it.
Check out the Elektrolux UltraSilencer
here are some insights into the study
great study – but I am sure I read somewhere that people think their vacuum doesn’t clean properly when they don’t hear the all so familiar sound of sucking.