Volt Drive: Great Ride, Interesting Interior and a Friendly Chirp - Behind the Wheel with Phil Lebeau - CNBC.com

Volt Drive: Great Ride, Interesting Interior and a Friendly Chirp - Behind the Wheel with Phil Lebeau - CNBC.com: "Because the Volt is a virtually silent extended range electric car, GM has built in a 'chirp' for drivers to announce/warn pedestrians when they are driving by. This chirp is gentler than a car horn blaring and drivers sound it by pulling on the turn signal much as you would for turning on your high beams. Volt drivers will love the chirp."