Nora is will be 5 in May.
When we are home, Nora only barks when someone is at the door, (Just a single yap), when she hears the garage door open (meaning I am home from work), or when we wind her up and get her excited. Like I said when she's out though, all bets are off.
We drove up to Monterrey last year (beautiful coastal city a few hours south of San Fran) and took her around in her stroller (yes, we are THOSE people) and she loved it. We had to stop every 10 feet as we walked because people were just as excited to see her as she was to see them.