in a central business district, you are pretty much limited to a parking garage, and i don't understand how people can want to drive there and then complain about everyone else wanting to leave at the same time and causing traffic.
As to getting out of Arden Fair Mall in 10 minutes. Maybe you've never been there during the Christmas shopping season? I NEVER shop there at Christmas. Even the worst parking garage situation I've ever been in pales in comparison to that parking lot. I've had it take an hour or more just to get in and out. It just wasn't worth it.
One time I was trying to get to Kaiser (near Arden Fair) when the Veteran's Day sale was on. Traffic was backed up for a mile in every direction I tried. I finally gave up. Its awful.