The Santana Row developers thought pedestrian areas were cool, but for whatever reason they built roads right through the middle of their faux-pedestrian zones. Because you can't make people to get out of their cars at the edge and actually walk?
At a minimum, some people aren't very mobile. Others just don't want to walk far. So now you have to run golf carts of some sort which many who would use them just don't feel like dealing with and which start to degrade a pedestrian-only experience. Just excluding people probably works for a city core where it's hard to drive. Less so for an upscale shopping area.
I can't even begin to count the number of times i've seen someone almost hit in front of the container store / best buy.
The traffic in the faux-pedestrian areas (drivers) is even worse