I have a double decker I use it for my yorkie Prada who goes with me antiquin and to the farmers market and strolls around town with me, she suffers from Reumathoid arthritis and can't walk that much. I also use it to take the babies out without having to worry about people touching them..
here's one of the babies in the top deck during an event at a dog friendly mall..
http://i126.photobucket.com/albums/p...nor/yellow.jpg
and a picture of my stroller..
http://i126.photobucket.com/albums/p...lestroller.jpg