Not that it's a reason to change, but if you buy your hybrid from a San Jose dealer, you'll get free parking in SJ city lots! We got ours from Piercey for various reasons, and only found out about the free parking thing last month (after having owned the car for more than a year).

Don't underestimate the distraction factor even with the bluetooth headset. I've heard that simply talking to a passenger in the car raises accident rates. Personally, I find using my headset to be just about as distracting as holding the phone to my ear, and I rarely answer the phone when in the car.