IndyCars other cancelled races

In this racer.com article, Robin Miller lists the other IndyCar races that never came to be:

1. Chicago Grand Prix (Streets of Chicago)
2. Hawaiian Grand prix
3. Firestone Firehawk 600 (Champ Cars too fast, G-forces too high)
4. King Taco 500 (Fontana Wildfires)
5. Grand prix of Seoul
6. Grand Prix of Ansan China
7. Denver and Phoenix 2007
8. Qingdao, China
9. Brasilia, Brazil