Here is what I've successfully redeemed points for:

1) Airfare on GOL for World Cup

2) Supershuttle in various states

3) Taxes on award ticket airfare

Here is what I've not successfully redeemed for:

1) AMTRAK tickets

2) Subway credit & taxis

I use my hotel CCs for those because the points are >> Arrival

I'm surprised the supershuttle worked, but whatever. I am going to pump as many points as I can onto the card and use it for hotels for the World Cup 2014 in Brazil

Has anyone successfully redeemed for car rentals?