Have you ever been about to cross the street when you realized several tons of hybrid or electric car was about to cream you? It’s an occurrence that is apparently happening more and more often.

That’s why Toyota is offering a $149 noise maker for its Toyota Prius starting next week. Initially only to be available in Japan, the hybrid noise maker will be a speaker that’s installed under the hood. The noise will be selected by the manufacturer and will be designed to “alert but not annoy.”

While the Prius noise maker is only going to be available in Japan for now, plans are in place to see it brought to the U.S, market. It will be interesting to see if the American versions will allow for sound customization. Will it be like a whole new ringtone? Will Prius drivers be given the option to blast Lady Gaga at innocent passersby? Only time will tell.