See the work of Joan Nassauer and the CIty of Maplewood MN. There was an article on them a couple of issues back in LAM. That is more suburban (older suburbs, though, so more dense than suburbs are now) – no curb and gutter had been installed yet so they have been able to utilize existing draininage ditches a bit.
One cool project is in Albuquerque at the children’s science museum – another parking lot infiltration area, though not a wetland – spatially, it works well with the parking lot making a more pedestrian-friendly atmosphere. Though it didn’t significantly reduce the size of the parking lot it makes it SEEM a lot smaller….