Chicago, Boston, San Francisco and Philadelphia.
Parking is also a massive money maker (for everyone except the owners of the Yankee Stadium garages who took out too much debt right before Yankee attendance fell dramatically), so it's an important economic part of any stadium plan.
None of those cities even come close to comparing, I agree an outdoor stadium with little to no parking would be unprecedented but thats not a reason to believe its not sustainable when you factor in how different a transportation market NYC is compared to anywhere else in the country:
![upload_2015-6-13_13-18-52.png upload_2015-6-13_13-18-52.png](https://nycfcforums.com/data/attachments/2/2772-ad41f198a166e099891ee5c8910487c8.jpg?hash=rUHxmKFm4J)