ANN ARBOR, MI – U.S.-market Toyota hybrids and forthcoming electric vehicles will pump up the volume by including the auto maker’s noise-making Vehicle Proximity Notification System as standard equipment beginning with the ‘12 model Prius V due this fall. The VPNS, offered as a dealer-installed option on Priuses sold in Japan since late-2010, emits a car-like – albeit science-fiction-leaning – whirring noise to alert pedestrians to the approach of an-often silent-running hybrid or EV. ...

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