Now you know how when a car passes you at speed it goes EEEEEEAAAAAWWWWW as the doppler effect makes it first sound high pitched as it comes towards you and then low pitched as it whizzes away? Well, I want to mount a speaker on a silent Prius that goes WWWWWAAAAAEEEEE as it goes past. So to the person it is passing the car just seems to go AAAAAAAAAAAAAA. (are you getting this). I was kind of wondering if people would actually notice that the car sounds more like a flying saucer than a real car.
Ian and Pete were mildly taken with the concept once I had got the idea accross. But not so taken as to buy a Prius and try it. If any (or either) of my readers gets round to doing this I'd love to know the result.